## Forums imagedsp

## level sets segmentation problem [3 Attachments]

Hi I am new in this forum so first I would like first to introduce me. I am in my first year of my phD and I have a lot to learn yet. My...

Hi I am new in this forum so first I would like first to introduce me. I am in my first year of my phD and I have a lot to learn yet. My project is related to segment the myocardium and I wanted to try with level sets to see how it works. I have implemented a paper and It fairly works not so perfect as I thought but it seems a good basis to keep working on . I attach some results of my...

## hand extraction using frame difference method in MFC VS 2010 + OpenCV

Frame Difference in gray scale 1. I applied cvMean on original gray scale image and set as thresold So, result: http://imm.io/8x9p 2....

Frame Difference in gray scale 1. I applied cvMean on original gray scale image and set as thresold So, result: http://imm.io/8x9p 2. then i get cvMean from the cvAbsDiff() ressult that set that mean value as threshold result : http://imm.io/8x9H And, When ever i apply this cvAbsDiff() it gave me moving edges but i meed moving hand instead of moving edges. My code : http://cod...

## Mapping between image pixel and spherical surface

Hi there, my name is Apostolos and I am quite new with computer vision and image processing... My question sounds simple but so far I...

Hi there, my name is Apostolos and I am quite new with computer vision and image processing... My question sounds simple but so far I have not found the right answer. I would really appreciate any trial to help me on that! Problem description: Given the f (focal length) of a camera , thegeometric size of the detector of the camera and a pixel image which was taken with that ...

## FFT 2D Convolution - Question

Hello, I have a question, If I'm doing the FFT Convolution the right way because I don't get the wanted results. ( I am using the kissFTT library...

Hello, I have a question, If I'm doing the FFT Convolution the right way because I don't get the wanted results. ( I am using the kissFTT library for c ) I load an image from a file. I filter out the argv values and put them into two arrays ( ar[] and gb[] ) they look like this: ar[0].r = alpha; ar[0].i = red; gb[0].r = green; gb[0].i = blue; Now let's say the image has a size of 51...

## Re: face detection and recognition algorithm for video surveillance

inHi, For the algorithms part, you can try using the eigen face decomposition method. i am trying to build a face detection and recognition...

Hi, For the algorithms part, you can try using the eigen face decomposition method. i am trying to build a face detection and recognition algorithm for > video surveillance in matlab6.5 but i am totally newbie in matlab. I > would like to know what is the best language to write this algorithm > c,c++, java or matlab? > > can anyone pls mail me some algorithm on this as a refrence to study

## Removing Perspective distortion

Hello, I am working on a project in which i need to create a panorama by taking images from a PTZ camera. The problem I am facing is when I...

Hello, I am working on a project in which i need to create a panorama by taking images from a PTZ camera. The problem I am facing is when I capture two images at different angles, the overlapping region between the two images have perspective distortion. So to remove it, I thought of bringing both the images in same plane and then compare and stitch them. To bring the images in same plane I t...

## Image Processing spectral frequency.....

inI wanted to know if there are any commands for getting image pixel - spectral response in MATLAB. An RGB image has 3 bands. I can decompose the...

I wanted to know if there are any commands for getting image pixel - spectral response in MATLAB. An RGB image has 3 bands. I can decompose the image into 3 images corresponding to the 3 bands. I wanted to test my code for images having multiple bands. Thank you

## Connect camera?

inHi I'm wondering how can I use matlab to get online frames from a vidio camera that is connected to the computer.? is there any especial...

Hi I'm wondering how can I use matlab to get online frames from a vidio camera that is connected to the computer.? is there any especial hardware for connecting the camera to the computer? any guide would be realy helpfull. thanks inadvance.

## Real time Image Processing

inHello there, I am very new to real time processing but very experienced with image processing algorithms. I was just wondering what it takes to...

Hello there, I am very new to real time processing but very experienced with image processing algorithms. I was just wondering what it takes to get my hands on? What devices and software do I need. I know that my question is rather too general, but all I need is to know what a real time image processing system should include, considering that I want to use a usb sensor. What kind of boards a...

## SPCA and face recognition can some body help....thanks

inHi Guys, I am trying to implement a modification proposed by D Zang et all in a paper "A New Face Recognition Method based on SVD Perturbation...

Hi Guys, I am trying to implement a modification proposed by D Zang et all in a paper "A New Face Recognition Method based on SVD Perturbation for Single example image per person" http://www.google.ca/url?sa=t&source=web&cd=1&ved=0CBkQFjAA&url=http%3A%2F%2Fciteseerx.ist.psu.e du%2Fviewdoc%2Fdownload%3Fdoi%3D10.1.1.94.5170%26rep%3Drep1%26type%3Dpdf&ei=QFiATNTNFMKB8ga2sOyN Ag&usg=AFQjCNGtY5evyfL