Image

Started by Ramesh in Matlab DSP15 years ago 1 reply

Hi,     Is there any function in MATLAB that can divide a given image into blocks of desired size. I know there's blkproc that...

Hi,     Is there any function in MATLAB that can divide a given image into blocks of desired size. I know there's blkproc that can divide the image into blocks aof desired size..but then it does some processsing as well.....I need a function that just divides the image into blocks


image matching

Started by heidar mhr in Matlab DSP13 years ago 3 replies

hi all, how can i use the correlation function to find the best match of the image that i have with the templates that are there in a library?...

hi all, how can i use the correlation function to find the best match of the image that i have with the templates that are there in a library? can somebody explain an easy way to achieve this? Thank you


one point for centroid [2 Attachments]

Started by Atefeh Foroozandeh in Matlab DSP9 years ago

Hello, I want to find one (not more )point in my image (I attach it ) that set in the interior circle (you can?see in the image) for my...

Hello, I want to find one (not more )point in my image (I attach it ) that set in the interior circle (you can?see in the image) for my image, regionprops in matlab give more than one point for centroid (it doesn't help me ?) I attach program that I use it, pleas see it (matlab.txt) I really need your help, immediately? thanks soooooooooo much ? atefeh, msc degree of applied mathe...


Writing the colorbar to an image

Started by Sean in Matlab DSP15 years ago 1 reply

I'm trying to get the color bar from the current figure along with the numeric annotations along the side of the bar into a standard...

I'm trying to get the color bar from the current figure along with the numeric annotations along the side of the bar into a standard color image matrix in order to write the color bar--and nothing else-- to an image file (e.g., Windows BMP). Is this possible? Due to figure dim


Dynamic Axes Creation in MATLAB GUI

Started by imagetigers au in Matlab DSP15 years ago 1 reply

Hello Friends, I'm doing my  project in the area of image storage and retrieval in image databases. In my retrieval GUI,i need to...

Hello Friends, I'm doing my  project in the area of image storage and retrieval in image databases. In my retrieval GUI,i need to create axes(to display the image) dynamically.The number of axes will be known only at the run time(by means of a variable).If anyone could help me


malarial parasite detection using image processing

Started by diwa0 in Matlab DSP13 years ago

hello everybody, Am DIWAKAR ..am trying to detect malarial parasite with given slide image using image processing toolbox..pls help the...

hello everybody, Am DIWAKAR ..am trying to detect malarial parasite with given slide image using image processing toolbox..pls help the with the code using MATLAb as am new to this area. pls tell wat r the process to be done..i tried with thresholding followed by converting to binary...later applying watershed alghorithm..it doesnt result ..i need to count the no parasite cell and si...


Wavelet Decomposition

Started by a_ch...@hotmail.com in Matlab DSP13 years ago

Hi there, Hope someone can help me with this problem. I've got a 2D image (256x256) and i want to decompose on each row of the image using...

Hi there, Hope someone can help me with this problem. I've got a 2D image (256x256) and i want to decompose on each row of the image using wpdec. After i want to extract features by taking the mean of the coefficents at each node. How do i go about this? Thanks


obtain the pixel value of the image

Started by Frederick in Matlab DSP15 years ago

hi, Is there anyone know how to obtain the pixel value (height, width and intensity) of the image? What function should I use?...

hi, Is there anyone know how to obtain the pixel value (height, width and intensity) of the image? What function should I use? I need the matlab show me the image and I pick a few pixels. Matlab will return me an array with those pixels. Thank you for your help


Histogram equalization

Started by Shiny in Matlab DSP14 years ago 1 reply

Hi, I used to get an error "Undefined function or a variable or cleared reference variable". Can anyone suggest some ideas of how to get...

Hi, I used to get an error "Undefined function or a variable or cleared reference variable". Can anyone suggest some ideas of how to get rid of the error? Also Can anyone give me the codings for performing histogram equalization of a subdivided image(the image which has less than mean value of the image) after applying the DCT2 transformation.


Help - template matching using FFT2

Started by narcolepsyfreak in Matlab DSP16 years ago

hi.. i am currently working on an image recognition. i am using fft2 to find correlation value between 2 image. lets say i...

hi.. i am currently working on an image recognition. i am using fft2 to find correlation value between 2 image. lets say i have an image of an object and a matching template. when i use fft2, why is it, in the correlation matriks, the highest correlation value is


DICOM to binary image conversion

Started by Gullapalli jayaroop in Matlab DSP17 years ago

Hello, I have read a DICOM format image file as follows: infoY0 = dicominfo('diffusioncalibration_2002103018424836_2_4.dcm'); ...

Hello, I have read a DICOM format image file as follows: infoY0 = dicominfo('diffusioncalibration_2002103018424836_2_4.dcm'); ref_img = dicomread(infoY0); figure(1), imshow(ref_img, []) title('reference image') axis on I need to covert the DICOM file i


tiff images to lossless jpeg

Started by anujack_21 in Matlab DSP16 years ago 2 replies

Hi all, I would like to convert my tif image to lossless jpeg.Can any one suggest me a way to do it in matlab or otherwise??...

Hi all, I would like to convert my tif image to lossless jpeg.Can any one suggest me a way to do it in matlab or otherwise?? The tiff image that needs to be converted is 16 bits/pixel and is about 35MB. If not lossless jpeg can it be converted to a pnm image without any


reading color images

Started by gandhi mathi in Matlab DSP17 years ago

hai, I am new to matlab.I don't know how to read(import) an color image gif/jpeg/bmp. I can read gray scale images by converting...

hai, I am new to matlab.I don't know how to read(import) an color image gif/jpeg/bmp. I can read gray scale images by converting into double.when ,I try to read a color image error occures.Please,tell me the syntax to read in a clor image. gandhi


Drawing a line

Started by aniketsamant2004 in Matlab DSP14 years ago

I have an image, and the magnitude and the orientation values of the gradient of the image. I want to draw the gradients in the image. The ...

I have an image, and the magnitude and the orientation values of the gradient of the image. I want to draw the gradients in the image. The length of the line represents the magnitude and the angle denotes the orientation of the gradients. Is there any way of drawing this in MATLAB?


Image help

Started by Laiq Azam in Matlab DSP13 years ago 1 reply

Hello all!! I am trying to write a simple code: I've to read a jpeg color file stored in my hard drive, select a small portion of the...

Hello all!! I am trying to write a simple code: I've to read a jpeg color file stored in my hard drive, select a small portion of the image, and reproduce it with another name. Any help is appreciated.... Thanks. -- Laiq


relational "convolution"

Started by Fabio Mazzone in Matlab DSP17 years ago

Hi Matlabist! i want to process an image, precisely i need to build a relational filter, applying a kind of convolution (but...

Hi Matlabist! i want to process an image, precisely i need to build a relational filter, applying a kind of convolution (but relationa, i can't use a normal convolution) on the whole image. i want to process the image step by step on small region of interest on it, let's say a


how to get 8x8 blocks of image

Started by bush...@yahoo.com in Matlab DSP12 years ago

Hi All, I have to make a deblocking filter in matlab for MPEG-4 video. For it I take frames from the video and and using in matlab. the frame...

Hi All, I have to make a deblocking filter in matlab for MPEG-4 video. For it I take frames from the video and and using in matlab. the frame size is 144x176.My first step is to find the activity across the 8x8 boundary blocks in the image. and then classify the block as smooth,complex region. for that I first convert image into gray and then taking the 8x8 blocks, then on blocks i apply my fo...


Image Processing Problem

Started by deepak ropireddy in Matlab DSP15 years ago 1 reply

Hi, I have a specific problem in Image Processing. I have a set of RGB JPEG images, with 4 distinct RGB values. Thats is...

Hi, I have a specific problem in Image Processing. I have a set of RGB JPEG images, with 4 distinct RGB values. Thats is all the pixels have one of these RGB values. I would like to calculate the number of pixels of each particular RGB value in each image. I do no


Image from double to uint8-IMAGE PROCESSING in MATLAB

Started by Moniba Shams in Matlab DSP14 years ago 1 reply

hey I want to take power of unit8 type variable. For example s is an image whcih is read in 2 dimensional array.The values in 2 dimensional...

hey I want to take power of unit8 type variable. For example s is an image whcih is read in 2 dimensional array.The values in 2 dimensional array are of type unit8.The power is less than one.(greater than zero) e.g. 0.3. Deperately waiting for replies. Moniba


Re: simple images in GUI

Started by lali...@yahoo.com in Matlab DSP13 years ago

Hi, I also had a similar requirement - to put a logo on the GUI. I tried the axes and imshow functions as suggested by you but along with the...

Hi, I also had a similar requirement - to put a logo on the GUI. I tried the axes and imshow functions as suggested by you but along with the image I get to see the name of the file (eg:logo.bmp) above the image. How do I get rid of that so that only the image is displayed and not it's file name. Thanks, Lalit > > > > Hi, > Create a new small axes object and use imshow to put