×

Image domain compliance

  • US 9,918,116 B2
  • Filed: 11/18/2015
  • Issued: 03/13/2018
  • Est. Priority Date: 11/08/2012
  • Status: Active Grant
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.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×