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In this study,we have developed a three-dimensional (3D) optical flow program that includes a multi-resolution feature and applied to 3D anatomic structure and gross tumor volume (GTV) contour mapping for four-dimensional computed tomography((4D CT) data. Actual 4D CT data sets from one lung cancer patient and one esophageal tumor patient,10 phases were reconstructed per respiratory cycle respectively...
Recently, as the fast development of the computer network communication technology, itpsilas more and more convenient for the digital information storage and transmission. Therefore, more and more attention is focused on the copyright protection of digital information. An algorithm that gray image as watermark is embedded in original color-image is introduced. This algorithm thinks over both unobtrusiveness...
This paper proposes a new objective full-reference (FR) image quality assessment method with discrete Haar wavelet transform (HWSSIM). Here, both reference and test images are decomposed into four bands by 2-D Haar wavelet transform: LL, HL, LH and HH. The luminance and contrast information are extracted in the LL band, and the edge structure information is obtained with edge information map based...
Gait recognition has recently gained significant attention from researchers, especially computer vision researchers. Compared with other biometrics, gait has its unique advantages. Other biometrics technologies, such as face recognition, hand recognition, fingerprint recognition, can't work effectively when the person is far away. A simple and efficient gait recognition approach based on multi-resolution...
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