Method and device for compressing and expanding image intended for encrypted communication, program, and storage medium
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 30, 2018
Issued Date -
N/A
app pub date -
Nov 27, 2014
filing date -
Dec 16, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An object of the present invention is to provide a method, a device, programs, and storage media for solving a problem that it is impossible to losslessly compress a digital image while being encrypted, to transmit the digital image, and to expand the digital image at a receiving side to restore the digital image with no artifact. An image or video is subjected to discrete convolution with an encryption key image, to be defocused beyond recognition, thus being encrypted, is further subjected to entropy-coding lossless compression, and is transmitted over the Internet. The compressed image or video is expanded at a receiving side, and iterative operations are performed on the basis of a Bayse probabilistic formula by using the separately-delivered encryption key image, to restore the image or video before encryption.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully