Image domain compliance
First Claim
Patent Images
1. A method of modifying encoded packetized content, comprising:
- receiving, by a computing system, a data stream of encoded packetized content;
identifying, by the computing system, a particular encoded packet of the data stream as having image or video content;
determining, by the computing system, a threshold value defining allowable spatial frequencies for image or video content associated with a recipient computing system;
extracting, by the computing system, one or more discrete cosine transform (DCT) coefficients within the particular encoded packet without fully decoding the particular encoded packet;
identifying, by the computing system, one or more of the extracted DCT coefficients of the particular encoded packet having a value greater than the threshold value;
modifying, by the computing system, the identified DCT coefficients of the particular encoded packet, without fully decoding the particular encoded packet, wherein the modified DCT coefficients correspond to a spatial frequency content magnitude less than an original spatial frequency content magnitude within the particular encoded packet, wherein modifying the identified DCT coefficients comprises setting disallowable spatial frequency content of the particular encoded packet to random values lower in magnitude than the threshold value defining the allowable spatial frequencies for the image or video content; and
transmitting, by the computing system, the modified particular encoded packet to the recipient computing system.
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Abstract
Systems and methods for generating domain-compliant image data. Domain-specific usage rights may be evaluated. The domain-specific usage rights may be associated with the transfer of particular encoded image data to a particular computing system other than the computing system. The domain-specific usage rights may specify maximum allowable spatial frequency content of the particular encoded image data. Domain-compliant image data may be generated by removing particular disallowable spatial frequency content from the encoded image data prior to transfer to the particular computing system.
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Citations
17 Claims
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1. A method of modifying encoded packetized content, comprising:
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receiving, by a computing system, a data stream of encoded packetized content; identifying, by the computing system, a particular encoded packet of the data stream as having image or video content; determining, by the computing system, a threshold value defining allowable spatial frequencies for image or video content associated with a recipient computing system; extracting, by the computing system, one or more discrete cosine transform (DCT) coefficients within the particular encoded packet without fully decoding the particular encoded packet; identifying, by the computing system, one or more of the extracted DCT coefficients of the particular encoded packet having a value greater than the threshold value; modifying, by the computing system, the identified DCT coefficients of the particular encoded packet, without fully decoding the particular encoded packet, wherein the modified DCT coefficients correspond to a spatial frequency content magnitude less than an original spatial frequency content magnitude within the particular encoded packet, wherein modifying the identified DCT coefficients comprises setting disallowable spatial frequency content of the particular encoded packet to random values lower in magnitude than the threshold value defining the allowable spatial frequencies for the image or video content; and transmitting, by the computing system, the modified particular encoded packet to the recipient computing system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A computing device, comprising:
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one or more processors; and memory communicatively coupled with and readable by the one or more processors and having stored therein processor-readable instructions which, when executed by the one or more processors, cause the computing device to; receive at least one data packet containing image or video content, each of the at least one data packets having a first pixel count; determine a threshold value defining allowable spatial frequencies for image or video content associated with a recipient computing system; identify one or more discrete cosine transform (DCT) coefficients within the at least one data packet having a value greater than the threshold value; generate one or more modified data packets based on the at least one received data packets, wherein generating the modified data packets comprises modifying the identified DCT coefficients to correspond to a spatial frequency content magnitude less than an original spatial frequency content magnitude within the received data packets, wherein generating the modified data packets further comprises setting the identified DCT coefficients corresponding to disallowable spatial frequency to random values lower in magnitude than the threshold value defining the allowable spatial frequencies for the image or video content, and wherein each of the one or more modified data packets has the first pixel count; and transmit the one or more modified data packets to the recipient computing system. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A set-top-box, comprising:
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a first module configured to receive at least one image or video packet, and extract direct cosine transform (DCT) coefficients within the at least one image or video packet, without fully decoding the at least one image or video packet; a second module configured to modify particular DCT coefficients of the at least one image or video packet that exhibit a matrix column or row index value greater than a threshold value, wherein the threshold value defines allowable spatial frequencies of image or video content and is associated with the export of packetized content from the set-top-box to a different computing system, wherein the second module is further configured to; preserve particular DCT coefficients that exhibit a matrix column or row index value less than the threshold value; and modify particular DCT coefficients, that exhibit a matrix column or row index value less than the threshold value and greater than another threshold value, to exhibit a finite magnitude less than a corresponding original magnitude; and a third module configured to generate a particular image or video packet, the particular image or video packet comprising a plurality of DCT coefficients, including one or more particular DCT coefficients associated with disallowable spatial frequency content that were modified by the second module, and one or more unmodified DCT coefficients associated with allowable spatial frequency content. - View Dependent Claims (16, 17)
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Specification