Results 61 to 70 of about 458 (111)
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Image and video compression for HDR content
SPIE Proceedings, 2012High Dynamic Range (HDR) technology can offer high levels of immersion with a dynamic range meeting and exceeding that of the Human Visual System (HVS). A primary drawback with HDR images and video is that memory and bandwidth requirements are significantly higher than for conventional images and video.
Zhang, Yang +3 more
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Image and video compression: A survey
International Journal of Imaging Systems and Technology, 1999At the present time, we stand upon the threshold of a revolution in the means available to us for the widespread dissemi- nation of information in visual form through the rapidly increasing use of international standards for image and video compression.
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A novel image sensor for video compression
Proceedings of 1st International Conference on Image Processing, 2002A novel image sensor on which video signals can be compressed is proposed. Since the video signal is compressed on an imager plane by using fast analog processing, the amount of image data read out from the imager can be significantly reduced with very small latency.
Kiyoharu Aizawa +4 more
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Fast image/video retrieval on compressed image and video databases
1999 IEEE Third Workshop on Multimedia Signal Processing (Cat. No.99TH8451), 1999Modern communication, networking, and multimedia technologies make it possible to distribution image and video electronically. More and more digital images and videos are available to the average users. Consequently, more and more users start to access digital image and video by means of new ways, such as through the Internet.
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Temporal compressive imaging for video
2017 International Conference on Optical Instruments and Technology: Optoelectronic Imaging/Spectroscopy and Signal Processing Technology, 2018In many situations, imagers are required to have higher imaging speed, such as gunpowder blasting analysis and observing high-speed biology phenomena. However, measuring high-speed video is a challenge to camera design, especially, in infrared spectrum.
qun zhou, Jun Ke, Linxia Zhang
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Limited color display for compressed image and video
IEEE Transactions on Circuits and Systems for Video Technology, 2000Many display devices nowadays still allow a limited number of colors, called color palette, to be displayed simultaneously. Besides, images and videos in most World Wide Web databases are in compressed formats. Therefore, it becomes an important issue to retrieve a suitable color palette from compressed domain in order to have fast and faithful color ...
Pei, Soo-Chang +2 more
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Compressive video sensors using multichannel imagers
Applied Optics, 2010We explore the possibilities of obtaining compression in video through modified sampling strategies using multichannel imaging systems. The redundancies in video streams are exploited through compressive sampling schemes to achieve low power and low complexity video sensors.
Shankar, Mohan +2 more
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Image/video spatial scalability in compressed domain
IEEE Transactions on Industrial Electronics, 1998Image/video compression is widely used in various applications with the advent of the Joint Photographic Expert Group (JPEG), Motion Picture Expert Group (MPEG), and H.261 standards. Hence, most visual data are stored in the compressed format. Spatial scalable encoding of visual data has several applications, including browsing visual databases ...
Qingwen Hu, Sethuraman Panchanathan
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Perceptual cryptography on JPEG2000 compressed images or videos
The Fourth International Conference onComputer and Information Technology, 2004. CIT '04., 2004In this paper, a perceptual cryptography combining with JPEG2000 codec is proposed, which permutes different number of bit-planes in each code block, encrypts different number of coefficients' signs, and permutes code blocks in different frequency bands. Thus, the images or videos can be degraded to different degrees under the control of quality factor.
Shiguo Lian, Jinsheng Sun, Zhiquan Wang
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Optimal Image Tilings with Application to Video Compression
2006 International Conference on Image Processing, 2006We build on our previous work on best basis selection algorithms in large tree-structured dictionaries, previously used to construct effective image coders based on block and lapped transforms. In the present paper, we use such algorithms to select the optimal tiling for the motion compensation step in video compression. We illustrate the effectiveness
Kai-Lung Hua, Ilya Pollak, Mary L. Comer
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