Find quantity of pixels within a spectral distance from a given [r,g,b] spectra.
Spectral distance = sqrt( (r0-ri)^2+(g0-gi)^2+(b0-bi)^2) where [r0,g0,b0] is the target spectra (0:255) and [ri,gi,bi] are from an image pixel.
Two warm-up timing prep runs will be executed against a 512x512 sub-section.
Timing run will be against a 2036x3060 image : concordaerial.png
A second test will select a random point in a small window to confirm accuracy. Unfortunately bwdist does not appear to work in Cody.
Ranking will be based upon speed. Accuracy is still required.
Input: [image array, spectra, threshold distance]
image array [ x, y, 3 ] % Higher order images is a future activity
spectra [ r g b]
Output: [ N ] number of pixels within(<=) threshold distance
Pixel count tolerance of 1% is allowed
The right to update the test points/thresholds is reserved in case of shenanigans.
MATLAB and Simulink resources for Arduino, LEGO, and Raspberry PiLearn more
Opportunities for recent engineering grads.Apply Today
New to MATLAB?Learn MATLAB today!
Play games and win prizes!Learn more