level sets segmentation problem [3 Attachments]

Started by Esmeralda Ruiz Pujadas in Image Signal Processing5 years ago

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

Started by RABIA in Image Signal Processing5 years ago

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

Started by APOSTOLOS PAPAZOGLOU in Image Signal Processing5 years ago

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

Started by marc...@gmail.com in Image Signal Processing5 years ago

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

Started by vina...@gmail.com in Image Signal Processing5 years ago 1 reply

Hi, 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

Started by fubu...@gmail.com in Image Signal Processing5 years ago

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.....

Started by raoc...@rediffmail.com in Image Signal Processing6 years ago 2 replies

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...

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?

Started by mehrnazf in Image Signal Processing6 years ago 1 reply

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...

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

Started by trombokinase356 in Image Signal Processing6 years ago 1 reply

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...

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

Started by f4td4n in Image Signal Processing6 years ago 1 reply

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...

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


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