computer-vision

Verify image sequence

Problem Problem shaping Image sequence position and size are fixed and known beforehand (it's not scaled). It will be quite short, maximum of 20 frames and in a closed loop. I want to verify (event driven by button click), that I have seen it before. Lets say I have some image sequence, like: If seen, I want to see the ID associat...

Matching two images

How can we match two images using Java. I want to make a face recognition application, that will store face of people at some location and then later will check whether a person is a member or not. If the persons face will match a pic already in database, then the person will be authenticated else not. Is there a way to do so. ...

Fast accessing pixel values of jpeg images.

CompVision once again, im working with jpeg images in my application. Just because i'm a bit familiar with MFC and ATL, i used CImage to access pixel values. For my needs i calculate brightness matrix for the image during initialization. Function goes like this(Image is the name of my own class, unimportant, bright is float[][]): voi...

Laser light detection with OpenCV and C++

Hi all, I want to track a laser light dot(which is on a wall) with a webcam and i am using openCV to do this task. can anybody suggest me a way to do it with C++. Thank you ! ...

Count the number of "holes" in a bitmap

Consider a MxN bitmap where the cells are 0 or 1. '1' means filled and '0' means empty. Find the number of 'holes' in the bitmap, where a hole is a contiguous region of empty cells. For example, this has two holes: 11111 10101 10101 11111 ... and this has only one: 11111 10001 10101 11111 What is the fastest wa...

I need to diff two images to see what color(s) are different. Any medium level algorithms?

If I have two images which are both the left side view of a the same shoe in different styles, how can I determine by which color(s) they differ? Perhaps it's a shoe in two styles, one style has pink laces and a white side, the other has white laces and a yellow side. I want: Image One Colors: C1=Pink, C2=White Image Two Colors: C1=W...

image tile registrations

I'm trying to create a mapping for tile/pixel positions in one tiled image dataset to tile/pixel position in a different dataset (that roughly cover the same image area). Due to rotations of the imaged area, panning axis, translations, and scale changes, there are many unknowns to account for in this mapping. This situation is illustrate...