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Internet access has dramatically increased the risk of receiving objectionable information such as the pornographic images. Content based Image detection is of the paramount importance in objectionable images filtering in Internet. This paper designed a simplified system by using the HSV color space converted by the law of gravity center and combining the face detection to define and evaluate the...
Noar and Shamir presented the concept of visual cryptography. Many researches following it go down the same track: to expand the secret pixels to blocks. As a result, the size of the secret image becomes larger, and the quality of the expanded secret image becomes worse. In order to prevent the pixels from expanding, Yang has proposed his probability-based visual secret sharing scheme, where the concept...
One of most important issue in research for unmanned ground vehicle is detecting signal lights at crossroads. This paper presents new algorithm for signal light detection. It has high detection rate with real time and fast processing at low price. Experimental environment is built in real vehicle and real urban road, and we shall show that the proposed algorithm realizes driving with reliability in...
This paper presents a license plate detection method for detecting license plates on vehicles, using the topology of painted numbers and letters and the outer contour of the license plate. Even in the situation of poor illumination, the contrast is often high between the background and the characters on the license plate; this makes the detection of characters on the license plate possible, when the...
In this paper, we propose a new color image retrieval scheme based on color features. The goal of this scheme is to effectively retrieve images similar to a query image in a color image database. In this scheme, a color image is first divided into three planes. Then the local features of the given image can be found by calculating the color difference of each plane. Thereafter, the color difference...
This paper presents an image formation model of a digital camera with consideration of both optical and the Bayer color filter array (CFA) degradations. Based on the proposed model, a regularized iterative image restoration algorithm is presented to deconvolve the space-variant image degradation. The spatially adaptive version further improves the restoration quality. Hardware implementation issues...
In this paper, we describe the Gaussian Weighted Histogram Intersection (GWHI) algorithm. The algorithm is able to provide positive results in image retrieval. But the histogram algorithm alters the histogram of an image using particular lighting conditions. Even two images with little differences in lighting are not easily matched. Therefore, we propose that the Histogram Matching Algorithm (HMA)...
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