Images are captured and/or displayed by most of the digital devices in RGB color space
since it is an orthogonal color space
and hence is hardware friendly.
For removing these disturbances, we convert WCE images into Lab color space
and find that tissue of digestive tract shows commonly stronger color reflection in channel a than the color reflection in any disturbance, and the tissue has obvious difference in channel b with any disturbance.
Since the selection of color space
plays the most important role in traffic light detection performance, past studies have explored all the possible options.
We have built two different classifiers for texture + RGB and texture + HSV color space
Those global features are global color histograms in the following color channels: 3rd channel of the CIE-XYZ color space
, 1st channel of the HSV color space
, and 1st channel of the HLS color space
Chaudhary, "Robust skin segmentation using color space
switching," Pattern Recognition and Image Analysis, vol.
(1) Transform RGB to XYZ color space
using the following formula (1):
The values of each one of the bands of the RGB color space
were extracted for the calculation of the median.
HSV color space
defines colors as hue, saturation and brightness, respectively.
A true color-critical professional display with integrated hardware calibration, shading hood, and 350-lux high luminance, BenQ SW2700PT was awarded for its precise 99% coverage of Adobe RGB color space
, vivid high-contrast rendering of deep black levels, and comprehensive connectivity including Displayport, DVI, HDMI, USB 3.0, and even memory card reader and OSD controller.
Because CIE Lab (E illuminant) was shown to perform well in most of the cases as per analysis , this uncorrelated color space
is also the choice of the algorithm implemented in the available framework.
To evaluate the segmentation performance of the Euclidian metric in the L*a*b color space
we designed a system that generated synthetic color images, with its associated ground truth (GT), and evaluated the results with Receiver operating characteristics (ROC) curves .