Systems and methods of inter-frame compression
View Patent ↗A system and method for rendering images, and performing operations such as windowing and leveling, when the parameters of a client appliance are known and rendering images when the parameters of a client appliance are unknown. The invention also considers the rendering from the client appliance perspective and the server appliance perspective.
1. A method, comprising:
accessing previously rendered image data;
storing at least one frame of previously rendered image data as history buffer data;
generating predicted current buffer data as a function of the history huffer data, the history buffer data providing information of window and level parameters which have unknown values;
accessing current buffer data;
generating residual buffer data as a truncation function of a result obtained by subtracting the predicted current buffer data from the current buffer data; and
providing the residual buffer data to a transmission medium.
2. The method of claim 1 , further comprising:
encoding the residual buffer data.
3. The method of claim 1 , further comprising:
overwriting the history buffer data with the current buffer data periodically.
4. An apparatus, comprising:
means for accessing previously rendered image data;
means for storing at least one flame of previously rendered image data as history buffer data;
means for generating predicted current buffer data as a function of the history buffer data, the history buffer data providing information of window and level parameters which have unknown values;
means for accessing current buffer data;
means for generating residual buffer data as a truncation function of a result obtained by subtracting the predicted current buffer data from the current buffer data; and
means for providing the residual buffer data to a transmission medium.
5. The apparatus method of claim 4 , further comprising:
means for encoding the residual buffer data.
6. The apparatus of claim 4 , further comprising:
means for overwriting the history buffer data with the current buffer data periodically.
7. A system, comprising:
one or more processors;
one or more memories, operatively coupled to the one or more processors, storing program code that cause the one or more processors to execute program code, comprising:
accessing previously rendered image data;
storing at least one frame of previously rendered image data as history buffer data;
generating predicted current buffer data as a function of the history buffer data, the history buffer data providing information of window and level parameters which have unknown values;
accessing current buffer data;
generating residual buffer data as a truncation function of a result obtained by subtracting the predicted current buffer data from the current buffer data; and
providing the residual buffer data to a transmission medium.
8. The system as claimed in claim 7 , further comprising program code for:
encoding the residual buffer data.
9. The system as claimed in claim 7 , further comprising program code for:
overwriting the history buffer data with the current buffer data periodically.