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Binocular measurement system has a wide range of applications and becomes a hot research direction in recent years. Traditional feature extraction and matching methods limit its accuracy and robustness. In this paper, we propose a new method of binocular depth measurement based on speed up robust feature (SURF). Firstly, we extract SURF feature points from object original image as a standard feature...
Gender classification is one of the most challenging problems in the field of pattern recognition. The pixel-based gray image recognition method is quite sensitive to illumination variation and has high dimensions for computation. PCA-based image feature recognition algorithm can reduce the image dimension, but it is only on the basis of optimal entropy to choose face features which neglects the different...
Human skin color distribution is relatively compact in a color space. That skin pixels in each frame are closed together as a ??dot cloud?? is hypothesized, the shape evolution of ??dot cloud?? in the color space from frame to frame is parameterized as translation, scaling and rotation. The linear combination of forecasts, which is consisted of 2-order Markov predictor and Wiener one step predictor,...
A new algorithm for face tracking is proposed. Color information provides an effective cue for face tracking due to its robustness to scaling, rotation and translation. But the main limitation of color cue is that it can be easily interrupted by the camouflage objects that have the same or similar color with the target face. In order to achieve robust face tracking performance, the texture feature...
For face detection in complex background pictures with single or multiple faces, this paper presents a new face-detection method. In YCbCr chrominance space, the distribution of the skin color is described as a Gaussian model and presented as a likelihood image. Otsu method is used to segment the skin pixels; At the same time, the skin regions are located in the KL skin color space, finally the two...
Gabor wavelet is a multi-resolution description. It could extract the gray feature of facial area using amplitude coefficients of Gabor wavelet even when illumination changes. Based on the fact, this paper proposes a face detection method employing BP network combined with Gabor wavelet transform. Sample features are represented by Gabor description for BP network training. First we use standard modules...
The close-opening or open-closing filter based on the morphological filters with the same size structuring element cannot remove all the positive or negative impulse noise effectively. To improve the performance of these two kinds of filter, the generalized close- opening and open-closing filter based on the morphological filter with the different size structuring element are put forward. Based on...
Pulse coupled neural network (PCNN) has gained widely research as a new artificial neural network. It derives directly from the studies of the small mammal's visual cortex. The peak-and-valley filter can keep the details of image sufficiently if the density of noise is low enough. But for the image that is badly contaminated with noise, the effect of the peak-and-valley filter is inadequate. To overcome...
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