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Craters are one of the most significant features of the lunar surface and have been researched widely because they offer us the relative age of the surface unit as well as crucial geological information. Generally, early studies of craters are based on the result of manual extraction from lunar images which requires a great deal of man power and specific knowledge and skills. With the development...
Water-jet cutting machine is one of the high-tech products setting of ultra-high pressure technology, numerical control technology, computer application technology as a whole, make use of the kinetic energy of abrasive water-jet cutting of various materials to achieve the purpose of cutting. It has advantages such as no chemical changes, no heat distortion, thin cutting gap, high accuracy, aspect...
In the robot vision system of the apple harvesting robot, the key is to recognize and locate the apple. To solve recognition questions such as high error rate, too much calculation and time consuming, a new recognizing method, support vector machine (SVM) is applied to improve recognition accuracy and efficiency. At first, vector median filter is used to remove the color images noise of apple fruit...
This paper presents a novel ultrasonic sensing based face recognition system, which can complement traditional vision-based recognition due to its unobtrusiveness, low-cost and robust to environmental conditions. For different configurations of Transmitter-Receiver (TR) pairs, ultrasonic chirp signal is chosen as the transmitted signal and used to demodulate the echoes for face recognition. Features...
In this paper, a novel image watermarking scheme based on independent component analysis (ICA) is proposed. In the proposed scheme, the original image is sub-sampled firstly to obtain four sub-images, and the features of the original image are extracted by performing ICA to these sub-images, and then the feature, which has the largest variance, is selected out to be watermarked on its block DCT coefficients...
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