## Forums Search for: Image

## Image stitching

Hi all, I am doing Face verifiacation project , assuming the face as bilateral symmetry, i cut the face image into 2 halves Is there any...

Hi all, I am doing Face verifiacation project , assuming the face as bilateral symmetry, i cut the face image into 2 halves Is there any simple method to join the images?? with thanks! -- If you cannot be a poet, be the poem ? manoarun

## Cylindrical Coordinates 2D Image

Hello All, I want to find the center of the image and defined one variable as theta which is fixed. Draw a line...

Hello All, I want to find the center of the image and defined one variable as theta which is fixed. Draw a line passing thru the center of the 2 dimensional image at fixed angle theta and consider those pixels which lie on that particular line and display as

## estimating the background pixel values

hi all the need to extract the background pixel values of an image. for this i have written the following...

hi all the need to extract the background pixel values of an image. for this i have written the following code: background=imopen(I,strel('rectangle',[480,640])); i need the background pixel values for the pixels in the image and here I is a gray scale image with size 480*640. could anyone tell me if this is the correct code or does this need any changes. plz explain thanks i...

## Re: For Loop Execution

--- bakoguz <> wrote: > I have a problem of for loops. > I saw the messages about them but it did not help > me. > I want to...

--- bakoguz <> wrote: > I have a problem of for loops. > I saw the messages about them but it did not help > me. > I want to filter my matrix(actually an image) by a > filter > and I want to convolve(2D) my filter with my image. > If I use

## line disconnection in the image

Hi there , I want to find the connectivity of line in the image i want to calculate whether the line is disconnected or not and i need to...

Hi there , I want to find the connectivity of line in the image i want to calculate whether the line is disconnected or not and i need to know the location of that area I am working in the environment of MATLAB I hope you will spend some of your precious time to figure out my problem regards kanwal

## PCA image compression

Dear all, I am looking for some Matlab code that implement image compression using Principal Component Analysis (PCA). Best...

Dear all, I am looking for some Matlab code that implement image compression using Principal Component Analysis (PCA). Best regards, Valeria Leite

## pixel values

inHello guys, I have a question. I have an image and I am wondering how to use MATLAB to generate a text file that contains the pixel values of...

Hello guys, I have a question. I have an image and I am wondering how to use MATLAB to generate a text file that contains the pixel values of the image? Thanks Haidar

## Unsupported Image

inHey Group, Has anyone got any experience of importing a image file into Matlab that was unsupported? If so could you please...

Hey Group, Has anyone got any experience of importing a image file into Matlab that was unsupported? If so could you please help.. Cheers

## how can I have a dct transform of this image?

inI have an image . how can I have a dct transform of this image. I want to access to dct coofisients.

I have an image . how can I have a dct transform of this image. I want to access to dct coofisients.

## Color Images

inHi All, I was trying to isolate the RGB components from a given image.I wrote the following code and i am getting the red and...

Hi All, I was trying to isolate the RGB components from a given image.I wrote the following code and i am getting the red and blue components but for the green component i am getting a Black image.Can some one guide what is going wrong.Also when i try to take the histogra

## curvature calculation

inI have an image which i had smoothed using Gaussian smoothing technique. I had also detected the edge of the object in the image. ...

I have an image which i had smoothed using Gaussian smoothing technique. I had also detected the edge of the object in the image. Next, I would like to calculate the curvature of the edge. How can do this using Matlab ? anyone got any idea ?? thanks..

## Hi

I have a problem of for loops. I saw the messages about them but it did not help me. I want to filter my matrix(actually an...

I have a problem of for loops. I saw the messages about them but it did not help me. I want to filter my matrix(actually an image) by a filter and I want to convolve(2D) my filter with my image. If I use for loops, I need two of them, but the execution is too slow. Can

## Boundary Detection using MATLAB

Does anyone have any experience on detecting a boundary of a 2D image using MATLAB and/or obtaining the co-ordinates of points...

Does anyone have any experience on detecting a boundary of a 2D image using MATLAB and/or obtaining the co-ordinates of points along the boundary of a 2D image ? Please let me know. Thank You, Aditya

## Intensity Profile

inHi Everybody, I am a newbie to Matlab ..I am facing problem while plotting the intensity profile for the entire image.... Can...

Hi Everybody, I am a newbie to Matlab ..I am facing problem while plotting the intensity profile for the entire image.... Can anybody suggest me the fuction which supports to retrieve the intensity values for each pixel in the Image.. Thanks in Advancce...I need this help very urgently... With Regards, Ambika.S

## Minumum cut

Hi all, I am doing work of image processing and in it "segmentation" through Minimum Cut. I am getting the eigen vectors of image. But I...

Hi all, I am doing work of image processing and in it "segmentation" through Minimum Cut. I am getting the eigen vectors of image. But I want stuck on how to make a segmented picture from the eigen vector of highest eigen value. Please help me & reply urgently plz. Nouman

## How to put mark on an image

inDear Friends, Please take my greeting. I need to put rectangular mark around a specific pixel on an gray scale image and...

Dear Friends, Please take my greeting. I need to put rectangular mark around a specific pixel on an gray scale image and write down a numeric value for that mark (inside or outside of the rectangle). Any one can help me by giving Matlab function or code? Sumon

## imwrite

indear all, I have a problem whichI hope somebody can help me with. I have an image ranging in values from 0 to 255. I have to...

dear all, I have a problem whichI hope somebody can help me with. I have an image ranging in values from 0 to 255. I have to modify some of the pixels to say 103.234 I therefore have values with decimal places. however the problem is when I go and save image again using i

## Bitwise Operation on Char type of Array and an Image

hi all, Can anyone tell me how can i perform bitwise opertions like 'bitand' with following input i) image of bmp type ii) text...

hi all, Can anyone tell me how can i perform bitwise opertions like 'bitand' with following input i) image of bmp type ii) text array I really need a help. Thanks in advance, nustian.

## Hilbert transform of 2D image

Hi I am trying to Hilbert transform a 2D image using the function "hilbert.m". But it is not working as the imaginary part is always coming...

Hi I am trying to Hilbert transform a 2D image using the function "hilbert.m". But it is not working as the imaginary part is always coming zero. Can any body help me in this regard?

## show red only in image

inHi, sorry for 2nd msg....maybe i did not make myself clear in the first. i know that red in colorspace is [:,:,1] but, if i am...

Hi, sorry for 2nd msg....maybe i did not make myself clear in the first. i know that red in colorspace is [:,:,1] but, if i am supposed to write codes for an image of array, say [200 180] how do i go about getting to know how many pixels of red are there in the above array? knowing that rgb is 255 0 0 for red, but, i need to do a