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406 results about "Image sharing" patented technology

Image sharing, or photo sharing, is the publishing or transfer of a user's digital photos online. Image sharing websites offer services such as uploading, hosting, managing and sharing of photos (publicly or privately). This function is provided through both websites and applications that facilitate the upload and display of images. The term can also be loosely applied to the use of online photo galleries that are set up and managed by individual users, including photoblogs. Sharing means that other users can view but not necessarily download images, and users can select different copyright options for their images.

Image hiding and authentication method based on secret sharing

ActiveCN103761702AImprove securityDifferences in Statistical PropertiesImage data processing detailsPattern recognitionHash function
The invention discloses an image hiding and authentication method based on secret sharing, and belongs to the technical field of secret image sharing. The image hiding and authentication method is characterized by comprising the steps that firstly, difference Huffman encoding is conducted on a secret image, every three generated bit sequences are set to be one group to be converted into decimal numbers which are used as coefficients of a sharing polynomial in the Shamir (k, n) threshold scheme, the k and the n are positive integers, the k is smaller than or equal to the n, and n shadow images are generated; secondly, n significant carrier images are selected, the generated shadow images are embedded into the carrier images in a matrix encoding mode, authentication bits generated by the hash function are also embedded into the carrier images, and n disguise images are formed and are in the charge of n different participants respectively. The disguise images generated through the image hiding and authentication method has higher visual quality, existence of secret information cannot be perceived by attackers easily, and the safety of the secret information is ensured. Meanwhile, before the secret information is recovered, the disguise images provided by each participant need to be authenticated, only the disguise images passing through authentication can participate in recovery of the secret information, and the safety of the secret information is further strengthened.
Owner:TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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