Invention Grant
- Patent Title: Lossless image compression using differential transfer
- Patent Title (中): 使用差分传输的无损图像压缩
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Application No.: US14035682Application Date: 2013-09-24
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Publication No.: US09386318B2Publication Date: 2016-07-05
- Inventor: Robert L. Ridenour , Jeffrey E. Frederiksen , Ian C. Hendry
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- Agent Robert C. Kowert
- Main IPC: G06T9/00
- IPC: G06T9/00 ; H04N19/137 ; H04N19/115 ; H04N19/12 ; H04N19/176 ; H04N19/46 ; H04N19/30 ; H04N19/15 ; H04N19/63 ; H04N19/107 ; H04N19/547

Abstract:
Lossless image compression using differential transfers may involve an image compression unit receiving image data for an image in a sequence of images and transmitting the image data such that image data for at least some image tiles is transmitted using lossy compression due to resource limitations. The image compression unit may then receive image data for a subsequent image in the sequence and determine that the image data for at least some tiles does not change relative to the image data for corresponding tiles of the previous image. The image compression unit may then transmit image data in a manner sufficient to create lossless versions of tiles for which lossily compressed image data was sent previously.
Public/Granted literature
- US20140161367A1 Lossless Image Compression using Differential Transfer Public/Granted day:2014-06-12
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