发明授权
- 专利标题: System for editing compressed image sequences
- 专利标题(中): 压缩图像序列编辑系统
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申请号: US69596申请日: 1998-04-29
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公开(公告)号: US6104441A公开(公告)日: 2000-08-15
- 发明人: Susie J. Wee , Bhaskaran Vasudev
- 申请人: Susie J. Wee , Bhaskaran Vasudev
- 申请人地址: CA Palo Alto
- 专利权人: Hewlett Packard Company
- 当前专利权人: Hewlett Packard Company
- 当前专利权人地址: CA Palo Alto
- 主分类号: G06T9/00
- IPC分类号: G06T9/00 ; G11B27/034 ; G11B27/036 ; H04N7/26 ; H04N21/234 ; H04N21/2343 ; H04N21/238 ; H04N21/44 ; H04N7/12 ; G11B27/00 ; H04N5/917 ; H04N11/02
摘要:
This disclosure provides for an image editing system that permits manipulation of compressed image formats without full decompression to the image domain. In particular, an editor manipulates discrete cosine transform ("DCT") coefficients for a dependent frame in a compressed image sequence to incorporate DCT representations of anchor frames upon which the dependent frame depends. Once converted, the frame can simply be reordered in the compressed domain without violating temporal dependencies, subject to bit rate matching. In one embodiment, an image sequence can be cut to leave remaining image frames which are then altered, so as to eliminate temporal dependencies upon eliminated frames. In another embodiment, an image sequence can be processed in the compressed domain for reverse-play. The editor provided by this disclosure permits real-time compressed domain editing applications, with reduced requirements for computational bandwidth.
公开/授权文献
- USD399743S Child resistant closure 公开/授权日:1998-10-20