In this paper, we present the architecture and design of a color space conversion module. The color space converter module is used for changing the image from RGB color space to YCbCr color space and vice-versa. The color space conversion module was designed using VHDL and was implemented on an FPGA. This design methodology helped us to achieve faster the time to market and also the ability to ...

This report studies a statistical skin-color model and its adaptation. By quantitative analysis and goodness-oft test, we reveal that (1) skin-color di erences among people can be reduced by intensity normalization, and (2) under a certain lighting condition, a skin-color distribution can be characterized by a multivariate normal distribution in the normalized color space. We then propose an ad...

Computer based methods for facial age estimation can be improved by incorporating experimental findings from human psychophysics. Moreover, the latter can be used in creating systems that are not necessarily more accurate in age estimation, but strongly resemble human age estimations. In this paper we investigate the perceptual hypothesis that contrast is a useful cue for estimating age from fa...

–In this paper, we present the architecture and design of a color space conversion module. The color space converter module is used for changing the image from RGB color space to YCbCr color space. The color space conversion module was designed using VHDL and was implemented on an FPGA. This design methodology helped us to achieve faster the time to market and also the ability to reuse one phys...

Traditionally, it was hard for image segmentation to suit the cotton image segmentation of foreign fibers. To solve this problem, this paper proposed an image segmentation method of foreign fibers based on HSV color space. The value of foreign fibers images’ S channel was enhanced in this method to improve the contrast of foreign fiber and its background which help the subsequent image segmenta...

We present methods to estimate perceptual uniformity of color spaces and to derive a perceptually uniform RGB space using geometrical criteria defined in a logarithmic opponent color representation.

This paper presents a novel FTT (Feature Triangle Tracking) algorithm to track the eyes, mouth and pose of a fatigue driver. The proposed method uses the motion information to localize the face region, and the face region is processed in YCrCb color space to determine the locations of the eyes and mouth. According to geometrical relationships of facial components and the varied pose of the driv...