A matrix is essentially an array indexed by two indexing variables typically for row and column. Arrays are useful and fundamental structures that exist in every high-level language. Here again N is the total number of pixels in the original (unpadded) smaller image and σ S is the standard deviation of the original (unpadded) smaller image. how to convert gray scale image into rgb image?. I need to somehow combine those two datasets. Images in Matlab. double convert to double precision. I will have a look to sourceforge. Also keep in mind that the char function can convert a cell array of strings into a 2D character array by vertically concatenating the strings while padding with white space as necessary: S = char(C), when C is a cell array of strings, places each element of C into the rows of the character array S. Hi, I am actually trying to do the opposite. How do I make it return values as type double?. Thank you very much!. MATLAB does not have good voxel visualization. Strings = char array (though to create an array of strings of different sizes, use a cell array). Because the data range of the matrix is outside the default display range of imshow, every pixel with a positive value displays as white, and every pixel with a negative or zero value displays as black. Introduction MATLAB has two different types of arithmetic operations: array operations and matrix operations. How to convert 2D image to 3D image in MATLAB or C++? Question. can any one say, how to convert a 2d array into a vector with an example or the command to do that. Function which can convert image formats supported by Matlab to high-quality. In practice, we convert the two images to grayscale to do the normalized cross correlation to avoid any possibility of getting different matching locations from each channel. Q&A for scientists using computers to solve scientific problems. Saturday, October 23, 2010. function converts the image into a 3-d or maybe 5-d array i. Is this a BW image? (If the image is paletted or color, a summing operation is poorly defined! ) Just convert your image data to a 2D boolean array using unflatten pixmap, then feed the 1bit pixmap to "boolean to 0. Here we assume that you know the basics of defining and manipulating vectors and matrices. To convert a string into a. Learn more about digital image processing, image processing, matrix manipulation MATLAB. Individual pixels contain a number or numbers representing what grayscale or color value is assigned to it. In matlab it is a function called imagesc to do this. struct structure array. convert bmp - tool to convert hex array to bmp image - Coder / Decoder JPEG in MatLab - How to convert image into data packet? - how to convert RGB444 raw to bmp? - how to transforming binary raw data (16-bit) into bitmap pixels (in C++) - how to set. k-Wave is distributed in the hope that it will be useful, but WITHOUT ANY. Convert the negative image into black and white using the function im2bw with a threshold of 0. Learn more about image, convert, array. M6L2 Remote Sensing-Digital Image Processing Software. How to conver 2d image to 3d image? Is there any matlab code r function? % read the image as a 2D array. Community Home;. So if the colormap is a 256x3 array, for example, the image will be made of indices. You need not to convert any image in 2-d array as most of the image processing libraries stores images as a 2-d array. I will have a look to sourceforge. Around The Home. Do the following code on matlab. Here is how to convert an image to an array Fastest way to convert Image to Byte array A 2D array is just an accounting trick applied on a 1D array. To start matlab on a unix system, open up a unix shell and type the command to start the software: matlab. Function which can convert image formats supported by Matlab to high-quality. Hope this helps. MATLAB: reshape 3D matrix to 2D Suppose we have an RGB image f whose size is M*N*3, now the problem is to reshape it into a 2D matrix of MN*3 elements, in which each column corresponds to R, G or B plane. Here is some code to do this… [code]import matplotlib. Im having trouble with a practice task for course prep which involves turning a 2D array into a weighted graph of sorts then using shortest path. Distance transform assigns to each pixel in BW a number that is the distance from that pixel to the nearest nonzero pixel in BW. This work was performed for Nichole VanderSal at Cornell. IMAGE PROCESSING USING MATLAB Matlab is high level language and interactive environment for exploring and visualizing your ideas into actions. String, byte array. MATLAB image processing codes with examples, explanations and flow charts. IMSHOW_NUMERIC, a MATLAB program which displays a numeric array as a grayscale image. Export CAD file as a image file and use IMREAD in MATLAB, but after that I am stuck with a big matrix but not sure how to use this matrix in an algorithm to make the robot not cross the "pixel" in the matrix. I actually wouldn't use the code above and use the image processing toolbox instead. To convert video to 2D array. That's how to convert to "strings", but like David said every single cell contains a string and you can get to it without doing anything, so we don't know why. Even though a color image is a 3D array, it's. Open Mobile Search. How can I convert 1D array into 2D array ?. Convert it to class double using the full dynamic range [0,1] with function mat2gray and call it cam_gray. The image is not interpreted pixel-by-pixel just converted to an array as it is. How can I convert a 2D array into vector in matlab? i don't know what is happening inside in your code but one way to convert 2d array into vector is as follows (If gray scale image and. This is a real pain if you are handling more than one channel, one slice, or one frame of images, as. This was a 3 hour presentation given to undergraduate and graduate students at Ryerson University in Toronto, Ontario, Canada on an introduction to Digital Image Processing using the MATLAB programming environment. If it's not already a 2-D array, meaning a gray. First, convert each image into a vector, simply by concatenating the rows of pixels in the original image, resulting in a single column with 48 × 42 = 2016 elements. So, now we are publishing the top list of MATLAB projects for engineering students. Image Processing with MATLAB (Basic) In this section: We processing the image with MATLAB code. Convert works well, I can get the gray image but my issue is that it should be very easy to get image's histogram from a 0-255 int array by doing something like this. You can write MATLAB image data to graphics files using the imwrite function. 75, and call it cam_neg_bw. Note also that we can press to move to a new line in the middle of defining an array (either 1-D or 2-D). Learn more about image processing, 1d to 2d. How can i convert a 3D image to 2D in matlab?. The best way to convert an image to an array of values is by using either the function IMAQ ImageToArray or IMAQ ColorImageToArray. The number of dimensions and items in an array is defined by its shape, which is a tuple of N non-negative integers that specify the sizes of each dimension. Introduction MATLAB has two different types of arithmetic operations: array operations and matrix operations. Convert matrix in single column - MATLAB Answers - MATLAB Mathworks. I am a newbie to use matlab. i meant, when i save 2d array in matlab ,as an image onto desktop and again read it back, my values are changing. All these projects are collected from various resources and are very useful for engineering students. raw file in Matlab Tag: image , matlab , rgb , luminance i am trying to convert an RGB image to a Luminance image and save it as a. be a prescribed format of a 2D array of N rows by 3 columns with values in the range of 0 to 1. 1bpp-8bpp BMPs are always paletted. You can use these arithmetic operations to perform numeric computations, for example, adding two numbers, raising the elements of an array to a given power, or multiplying two matrices. Because the data range of the matrix is outside the default display range of imshow, every pixel with a positive value displays as white, and every pixel with a negative or zero value displays as black. There isn't monochromatic. I need to somehow combine those two datasets. MATLAB Commands – 8 Plotting Commands Basic xy Plotting Commands axis Sets axis limits. Distance transform assigns to each pixel in BW a number that is the distance from that pixel to the nearest nonzero pixel in BW. Please refer to the Matlab. In this case the colormap will be a Nx3 array where each row corresponds to an index present (or not) in the image data. I have an image (tiff). By converting an image into a LabVIEW array, you can apply all the analysis, display, and array operators available in LabVIEW to the image data. Toggle Main Navigation. Signal Processing Resource Center » Vision Development Module Image Processing Examples » Image To Array Example. Around The Home. converting array to image??. Anyone have any clue as to how I would do this in Java?You would do well to provide more detail on what this is supposed to do. The basic principle is to take a regular 2D image (in BMP format) and translate the image’s gray shades into a 3D height map (Figures 1 and 2). 3 CREATINGVECTORS,MATRICESANDARRAYS 5 at the command prompt and take a look at the list of operators, functions and special characters, and look at the associated help pages. since dec2bin not working on arrays; i would like to convert the array in to vector. Hope you can clear my doubt. I am trying to convert a 4D double matrix from Matlab to C++, using the below code however, it looks to me that mxGetPr() does not support linear mapping! are there any mapping indexing formula that can be used with this function (i. Image file I/O. Use the “3 objects with sharp edges”. This tutorial is to talk about How to convert an RGB image to grayscale but keep one color? The code can be find in the tutorial section in http://www. This I = 2D array containing image data. jar) Calculate SNR of CCD Cameras Calculate TIRF Penetration Depth Calculate CCD Readout Noise Thread Killer (aborts plugins). This will start up the software, and it will wait for you to enter your commands. Please explain what you're trying to do, and we can suggest a solution. You can using reshape function in NumPy. png image file for the work you submit on the following problems. find image you want or paint it with any paint program like photoshop or adobe illustrator. Active 12 months ago. { } define/reference elements of cell array. Image Analyst's code processes only a 2D slice of the 3D array, and so does not handle the case that you need to consider the color components linearly in your convolution. how to convert gray scale image into rgb image?. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. All of the loop structures in matlab are started with a keyword such as for, or while and they all end with the word end. To find location (row, col) where the number of columns is width you calculate: (row-1) * width +. Around The Home. Shell script & Batch file & Visualization & Matlab. I want to write a new function that turns these numbers into letters. I need to do it in C or C++. How can i convert a 3D image to 2D in matlab?. Hi, I have some pictures, some of them are 2D and some are 3D. You can use np. R/S-Plus MATLAB/Octave Description; help. and can automatically generate contours, display volumetric data, interpolate shading colors and even display non-Matlab made images. You can using reshape function in NumPy. show() [/code]. The function MAKE_ARRAY is the most general array creation tool. pyplot as plt import numpy as np X = np. I would like to have a 2d matrix, where the spatial information is gone and only n*m measurements over time t are left (ie: n*m-by-t). Display the negative of this image (call it cam_neg) 4. NumPy allow us to give one of new shape parameter as -1 (eg: (2,-1) or (-1,3) but not (-1, -1)). random((100, 100)) # sample 2D array plt. Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. To get luminance of a color use the formula recommended by CIE: L = 0. The second thing is particularly. This file is part of k-Wave. This I = 2D array containing image data. A numpy array is a grid of values, all of the same type, and is indexed by a tuple of nonnegative integers. Toggle Main Navigation. If you want to repeat some action in a predetermined way, you can use the for loop. This will start up the software, and it will wait for you to enter your commands. may_share_memory() to check if two arrays share the same memory block. You can using reshape function in NumPy. [HELP] 2d images to 3d. getimage - Get image data from axes. Raw, Raw with alpha, Raw chroma key. Object Detection using Matlab Akshar Prabhu Desai Objectives A quick introduction to matlab Color models and their representation in matlab Generating and analyzing histograms Noise reduction Detecting objects of interest in image A graded lab assignment at the end Download links given at the end The Setup A webcam connected to your Windows machine Matlab R2009a A. I have a (71680 x 8) 2d matrix and I need to make a 3D matrix of dimensions (512 x 8 x 140) I need to take (512 x 8) consecutive matrices by row for 140 layers. Q&A for scientists using computers to solve scientific problems. The real power of Matlab is the ease in which you can manipulate your vectors and matrices. How can i convert a 3D image to 2D in matlab?. The goal here is to convert/transform Image into Base64 String and convert/transform Base64 String back to Image without compromising a Image data. Hope you can clear my doubt. I want the 3rd dimension to be concatenated along dimension 1 in the 2d matrix. This article covers how to create matrices, vectors, and cell arrays with the programming software MATLAB. This is where you enter your commands. At first I tried resampling the polar image to a rectangular grid using a 2D interpolator (TriScatteredInterp), which works but takes quite a lot of time. The second thing is the type of the output array. Basics of MATLAB Nishith Tirpankar January 27, 2012 you may require to convert a color image to grayscale. 1bpp-8bpp BMPs are always paletted. vi and i need to plot the power spectrum (FFT Power Spectrum. This I = 2D array containing image data. Since the load function returns a struct, then data is a struct whose fields are all the variables that have been saved to the mat file. Simulating B-mode Images Using A Phased Array Example. Generally to generate a multidimensional array, we first create a two-dimensional array and extend it. How can i convert a 3D image to 2D in matlab?. I want to write a new function that turns these numbers into letters. R G B) it would have just one number to define colour. Learn more about for loop, if statement, array, cell arrays, matlab, function MATLAB: reshape 3D matrix to 2D Suppose we have an RGB image f whose size is M*N*3, now the problem is to reshape it into a 2D matrix of MN*3 elements, in which each column corresponds to R, G or B plane. getimage - Get image data from axes. Matlab can understand some TeX syntax, see This is example for an assignment that uses both matlab code and images. Hi! Im trying to convert a 1d array to waveform (dbl). as i know there exist in matlab special functions,which decompose given image into colors and numbers,for example i have seen this code on this website. Texture mapping applies an image to a surface. 2126 × R + 0. Also keep in mind that the char function can convert a cell array of strings into a 2D character array by vertically concatenating the strings while padding with white space as necessary: S = char(C), when C is a cell array of strings, places each element of C into the rows of the character array S. As for all objects in MATLAB, structs are in fact arrays of structs, where a single struct is an array of shape (1, 1). Column 2: the bottom image is twice the spatial frequency of the top image. I have the Vision Development Module but I dont have the Image to array. 2D Image Histogram Normalization. MATLAB structs¶ MATLAB structs are a little bit like Python dicts, except the field names must be strings. In the code below, the variable 'desired' illustrates what I want to achieve, but I want to do it more efficiently than via a for a loop. Python - Converting 3D numpy array to 2D. In particular, the submodule scipy. You can specify a single dimension size of [] to have the dimension size automatically calculated, such that the number of elements in B matches the number of elements in A. The following Matlab project contains the source code and Matlab examples used for fast edges of a color image (actual color, not converting to grayscale). This is a real pain if you are handling more than one channel, one slice, or one frame of images, as. This can be useful for a variety of things but when I first learned about it, I was a bit confused by how the axes seem to be flipped sometimes when you do this. How can I convert a 2D array into vector in matlab? i don't know what is happening inside in your code but one way to convert 2d array into vector is as follows (If gray scale image and. A(2,3) accesses the element in the second row, third column. Removing Image noise GUI Components in MATLAB Image Conversion Edge detection Photoshop effects in MATLAB MATLAB BUILT_IN FUNCTIONS Morphological Image Processing Video Processing Array functions in MATLAB Files Histogram equalization Image Compression Object Identification Optical illusion Shapes Templates Image Geometry Image Arithmetic. Turns the mouse into. If we do an array operation then each number in the array is treated separately. PHP & Software Architecture Projects for $30 - $75. Function which can convert image formats supported by Matlab to high-quality. Hi, I have some pictures, some of them are 2D and some are 3D. Convert matrix in single column - MATLAB Answers - MATLAB Mathworks. Plot over an image background in MATLAB T his is a short tutorial that documents how to make a MATLAB plot on top of an image background. The problem is not constructing the 3D array: the problem is displaying it. In this program will provide you knowledge of software on different applications. In this case I used C# window form. 1 program that calls a matlab (6. I have a 3d matrix (n-by-m-by-t) in MATLAB representing n-by-m measurements in a grid over a period of time. How can I convert the image to 2D matrix! imhist command works only for images with 2D matrix form. Generally to generate a multidimensional array, we first create a two-dimensional array and extend it. I want the 3rd dimension to be concatenated along dimension 1 in the 2d matrix. As arrays are the basic data structure in MATLAB, it is important to understand how to use them effectively. Learn more about image, convert, array. Convert it to class double using the full dynamic range [0,1] with function mat2gray and call it cam_gray. A comparison between basic MATLAB and NumPy matrix operations. png; Output png Figure 5 May 2012 I used to create all my plots in Matlab (MathWorks), save them as eps (for latex ) and png (for pdflatex ) and include those in the LaTeX file via. Q&A for scientists using computers to solve scientific problems. Matlab has multiple kinds of indexing, and which one gets used is often a function of how many indices you use. This example shows how to convert an image into a two-dimensional LabVIEW array. Is there any matlab code or matlab function?. Color pictures generally contain three times as much data as grayscale pictures, depending on what color representation scheme is used. This tutorial is to talk about How to convert an RGB image to grayscale but keep one color? The code can be find in the tutorial section in http://www. Learn more about image, matrix Image Processing Toolbox MATLAB Answers. He writes about image processing concepts, algorithm implementations, and MATLAB, both in the book and on his Steve on Image Processing blog. Use the imclearborder function. Note that the matrix has data type double with values outside of the range [0,1], including negative values. color) of each element is interpreted as a height value in order to store information on the height of each point. The blit keyword is an important one: this tells the animation to only re-draw the pieces of the plot which have changed. MATLAB does not have good voxel visualization. MATLAB Answers. MATLAB PROGRAM : 2D MEDIAN FILTERING FOR SALT AND PEPPER NOISE WITHOUT USING medfilt2 FUNCTION | IMAGE PROCESSING. How can I convert 1D array into 2D array. Open Mobile Search. Create a 2D array that contains all the vectorized images in the training set. may_share_memory() to check if two arrays share the same memory block. x,y,RGB or x,y,R,G,B. It is useful for example to convert a PNG file to a C array to store the PNG image in flash and use LittlevGL's Image decoder interface. Introduction MATLAB has two different types of arithmetic operations: array operations and matrix operations. Q&A for scientists using computers to solve scientific problems. convert it to Adobe illustrator (jpg to Ai. When you say ‘write code for 2D image’; are you trying to form some kind of a 2D pattern using code (given the triangular plot you have generated, it is already a 2D image)? Or are you trying to save the image programmatically? You could directly export the image from the figure window if that is what you are looking for. A matrix is essentially an array indexed by two indexing variables typically for row and column. Anyway, to get it into PNG format you have to save it out to disk as a PNG format image file because when it's in MATLAB it's simply an array of numbers and format doesn't really apply. Note however, that this uses heuristics and may give you false positives. I have an image (tiff). In matlab it is a function called imagesc to do this. The lingering mxGPUArrays are then destroyed – this only destroys header information, not the underlying device data. I need to do it in C or C++. simply put, let's say I have this array - [1 2 1] I want to try and get this output in Matlab [1 1 1. HiGrey[i] is a 256 element integer array that holds the 2D image histogram. Images in Matlab. This is where you enter your commands. The table is sortable by any of the. I would like to convert a 3d matrix into a 2d matrix. i have a 2d array double matrix ; i would like to convert it to vector. All of the loop structures in matlab are started with a keyword such as for, or while and they all end with the word end. I think you are looking for "path planning" rather than clustering. Convert a string to a byte array and then reverse the conversion. as i know there exist in matlab special functions,which decompose given image into colors and numbers,for example i have seen this code on this website. Learn more about digital image processing, image processing, matrix manipulation MATLAB. If you are already familiar with MATLAB, you might find this tutorial useful to get started with Numpy. By default, a color image is stored by MATLAB using 3 matrices, each representing red, green and blue components of pixels. This was a 3 hour presentation given to undergraduate and graduate students at Ryerson University in Toronto, Ontario, Canada on an introduction to Digital Image Processing using the MATLAB programming environment. 1 Finding Matlab functions for Image Processing To determine if the Image Processing. The Fourier transform is just a step in a much bigger software we are developing. Matlab includes built-in support for automatic conversion of Matlab cell arrays into Java arrays. An array having more than two dimensions is called a multidimensional array in MATLAB. To get luminance of a color use the formula recommended by CIE: L = 0. If you use copytoImagePlus, you can open a 2D-5D MATLAB array as a Hyperstack with the right image type (8bit, 16bit, and 32bit for uint8, uint16, and other types of MATLAB array, respectively) in ImageJ with a simple syntax. You need to add 1. js is a 2D canvas library for desktop and mobile applications. and can automatically generate contours, display volumetric data, interpolate shading colors and even display non-Matlab made images. This article covers how to create matrices, vectors, and cell arrays with the programming software MATLAB. Normally, I use. Array containing integer indices of selected points. Later I'll cover linear indexing, and then a technique I like to call neighbor indexing. Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Convert a string to a byte array and then reverse the conversion. The 2D Fourier Transform is an indispensable tool in many fields, including image processing, radar, optics and machine vision. B = reshape(A,sz1,,szN) reshapes A into a sz1-by--by-szN array where sz1,,szN indicates the size of each dimension. I am trying to convert a 4D double matrix from Matlab to C++, using the below code however, it looks to me that mxGetPr() does not support linear mapping! are there any mapping indexing formula that can be used with this function (i. How to Create an Array in Python. Here, ﬁmanipu-. I would like to convert my image into mXn matrix binary as well as decimal. Convert it to class double using the full dynamic range [0,1] with function mat2gray and call it cam_gray. I think you are looking for "path planning" rather than clustering. 2d array to vector. MATLAB Answers. the video tries to give a. The basic principle is to take a regular 2D image (in BMP format) and translate the image’s gray shades into a 3D height map (Figures 1 and 2). F or example, try an y of these commands: help print help help help general Making Plots Matlab pro. StructuredDataTypes||Demonstration of structured data types. Object Detection using Matlab Akshar Prabhu Desai Objectives A quick introduction to matlab Color models and their representation in matlab Generating and analyzing histograms Noise reduction Detecting objects of interest in image A graded lab assignment at the end Download links given at the end The Setup A webcam connected to your Windows machine Matlab R2009a A. You need not to convert any image in 2-d array as most of the image processing libraries stores images as a 2-d array. In this case I used C# window form. com where you can convert your bitmap to the data array. Individual pixels contain a number or numbers representing what grayscale or color value is assigned to it. My understanding of a matrix is just a 2D array, which is pretty much what an image. The first Matlab program to read the files folllows. One of the most powerful tools in computer graphics is texture mapping. Many times the separator will be something like a comma, but not always. k-Wave is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. If you read an image in color form , It will use 3 2-d arrays to store image ,1 array for each channel B,G,R seprately , but if. Image data can represent at typical 2D image, but also, a 3D volume. How can I convert 1D array into 2D array ?. Needs to be matched somehow and one dimension needs to be interpolated to fit the dimension of the second data set My first dataset is X,Y (2D) and my second dataset is only Y (1D). Convert Image To TExt Characters And We Can Send File With Rs232. MATLAB Answers. Convert the negative image into black and white using the function im2bw with a threshold of 0. Learn more about rgb2gray. Hi, I have a project of image processing on the DSP;I use the code composer to program it,and i want to use the matlab to convert the jpeg image(640*480) to 2D-array of pixels which i will need it then in my C code. However, MATLAB will only return the mean values as integer numbers. Steve coauthored Digital Image Processing Using MATLAB. I am then trying to search 4x4 pixel regions of that image and calculate the mean of each image to determine which region has the highest mean value. However, when I read in the image, I find that my image (tiff) is in 3 D matrix form. In this program will provide you knowledge of software on different applications. since dec2bin not working on arrays; i would like to convert the array in to vector. Color pictures generally contain three times as much data as grayscale pictures, depending on what color representation scheme is used. 1bpp-8bpp BMPs are always paletted. Learn more about image, convert, array. Hello all, How can i convert my 2D double array to IMAGE? I have a 2D array that contains the results of a gradient diffusion and i want to see the results. How change Image/2d array proportions? Let`s say that I have a image (100x500) (a simple 2D-array) But I know that this image has a real-world size as 25. Introduction MATLAB has two different types of arithmetic operations: array operations and matrix operations. This example shows how to convert an image into a two-dimensional LabVIEW array. Like trying to plug in the Y axis data from the second dataset to the first set which is 2D. Learn more about digital image processing, image processing, matrix manipulation MATLAB. imshow_numeric, a program which accepts a numeric 2D array and displays it as a grayscale image. No reshaping will be necessary. To distinguish the difference between solving systems that have a right or left multiply, Matlab uses two different operators, / and. Every MATLAB user is familiar with ordinary. You can use it to create fonts, menus, intros etc. A slicing operation creates a view on the original array, which is just a way of accessing array data. Object Detection using Matlab Akshar Prabhu Desai Objectives A quick introduction to matlab Color models and their representation in matlab Generating and analyzing histograms Noise reduction Detecting objects of interest in image A graded lab assignment at the end Download links given at the end The Setup A webcam connected to your Windows machine Matlab R2009a A. R G B) it would have just one number to define colour. To make a 5x2 array in which all of the elements contain the value 3. Matlab includes built-in support for automatic conversion of Matlab cell arrays into Java arrays. can any one say, how to convert a 2d array into a vector with an example or the command to do that. For our purposes a matrix can be thought of as an array, in fact, that is how it is stored. Thus the original array is not copied in memory. Learn more about 2d. how to convert gray scale image into rgb image?. I have a 2D array over the range xmin Is there a way to convert an Image from the regular 3-D matrix form to the Cartesian coordinates (X-Y coordinates) so that I can do some Algebraic operations on it?-----Most images are already 2D Cartesian arrays, for example monochrome and color images. , String[]). All these projects are collected from various resources and are very useful for engineering students. Around The Home. IMSHOW_NUMERIC, a MATLAB program which displays a numeric array as a grayscale image. The Fourier transform is just a step in a much bigger software we are developing. "ImageData" is not the traditional "flat, 2D image" you are used to.