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0
votes
2answers
20 views

Tracking using color

I am working on tracking an object in a video by using its color. what i did is that i have converted the color of a selected object into LAB color space since it is a uniform color space. and then in ...
1
vote
1answer
23 views

How to unify the color and brightness measure of two given camera?

I have two cameras, and I'm up to perform some matching stuff on videos captured by these two cameras since I'm a CV guy. The problem is the two cameras have very different performance in terms of ...
2
votes
3answers
58 views

Problem with HSV and RGB color model

I am a beginner in digital image processing, recently I read a paper on color image contrast enhancement, In that paper authors have implemented their method in HSV color model. In my work I have ...
1
vote
1answer
72 views

Colored noises: Stationary or non-stationary?

I know for sure that white noise is considered as a stationary sound, but is that true for the rest of them? http://en.wikipedia.org/wiki/Colors_of_noise Also, can we meet some of these sounds in ...
1
vote
1answer
142 views

What are some uses of the overall colour average of an image?

As I understand, the overall colour average can be obtained by summing the individual r, g, b values of all pixels within and image and dividing by the number of pixels to produce a new tri-vector. ...
3
votes
2answers
80 views

What is state of the art in multivariate 2D image display?

If I have a 2D scalar image, it's trivial to display it with MATLAB or matplotlib type tools with the pixel values mapped via a color map, and there is any amount of literature (one example, another ...
5
votes
1answer
69 views

Temperature invariant color space

I'd like to build a color difference metric that will be invariant to small changes in lighting conditions. In other words, I should be able to tell that a red shirt is not the same as a blue shirt, ...
5
votes
1answer
334 views

Coloring a waveform with spectral centroid or by other means

Update 7 The final form that I'll adopt, much like in Update 3 (it's been a little Photoshopped to get smooth transitions between colors) Conclusion is I was close months ago but did not consider ...
9
votes
1answer
2k views

How do I calculate the color temperature of the light source illuminating an image?

How can I calculate the (black body equivalent) color temperature of the light source illuminating a given image? Below are screenshots of Adobe Lightroom manipulating color temperature and a shift in ...
1
vote
1answer
158 views

Is the mean of visible color in CIELab color space can be non visible color?

I am converting color from RGB to CIELab to train a GMM. When I get back the mean of clusters of the GMM I have sometimes negatives values in RGB space. I was wondering if the mean of only visible ...
1
vote
2answers
73 views

Object Tracing with Particular Color

I started working on a autonomous robot project in my spare time. Everything is finished except the image proccessing part. I want my robot to follow an object with particular properties. For the ...
3
votes
1answer
440 views

FFT of color images incorporated into an Object Recognition method?

Is there any instance where Fourier transforms of color images have been used in conjunction with other object recognition method? Any instance of usage of Fourier transforms in color images? I ...
2
votes
1answer
421 views

How to Generate False Color Palette

How to convert grayscale intensity input to something like the following image? It seems that no response (0, black) is converted to dark blue, then it goes through other colors to red. How are ...
0
votes
1answer
330 views

Converting Gamut3D from RGB colorspace to LAB colorspace

I have this code for Gamut3D in RGB, but I'm looking to convert it into LAB colorspace but I'm not really sure what changes I ...
8
votes
2answers
891 views

YV12 to RGB - What is wrong with my algorithm?

I am attempting to convert YV12 to RGB using the following fragment shader: ...