Method and system for displaying an image
View Patent ↗A method and system for displaying an image, includes steps and means for: storing image data in a manner that enables retrieval of different spatial regions of an image at different fidelities; determining an viewer's point of gaze on a display; retrieving image data for each spatial region of an image at a fidelity that is a decreasing function of the distance of the regions from the point of gaze; and displaying the retrieved image data on the display.
1. A method for providing JPEG 2000 compressed image data, containing one or more tiles and one or more precincts, for subsequent transmission to a display, comprising the steps of:
storing the image data in a codestream, said codestream including a first section having a minimum resolution level of image information of an image using a resolution level-layer-component-position progression ordering and a second section having a maximum resolution level of image details of all of said image using a component-position-resolution level-layer progression ordering.
2. The method according to claim 1 , wherein the first section has all precincts from one or more low resolution levels.
3. The method according to claim 1 , wherein the second section has precincts that are not included in the first section.
4. The method according to claim 1 , wherein the second section is organized so that all data packets for each tile are contiguous and all data packets for each precinct within a tile are contiguous.
5. The method according to claim 1 , further comprising the step of:
producing a lookup table that associates a spatial location with a byte-count offset for the start of the data packets for each tile.
6. A method for storing JPEG 2000 compressed image data, containing one or more tiles and one or more precincts, for subsequent transmission to a display, comprising the steps of:
storing first data having a minimum resolution level of image information using a resolution level-layer-component-position progression ordering; and
storing second data having a maximum resolution level of image details using a component-position-resolution level-layer progression ordering; and
further comprising the step of:
producing a lookup table that associates a spatial location with a byte-count offset for the start of the data packets for each precinct in each tile.
7. A method for providing compressed image data, containing one or more tiles and one or more precincts, comprising the steps of:
a) storing first data that represents a minimum resolution level of image information in a first section of a codestream;
b) storing second data that represents remaining resolution levels of image details in a second section of said codestream, using a component-position-resolution level-layer progression ordering;
c) prioritizing a plurality of data packets of said stored second data; and
d) transmitting, in order, said first section and at least part of said plurality of prioritized data packets of said stored second data.
8. The method according to claim 7 , wherein the first data represent all precincts from one or more low resolution levels.
9. The method according to claim 8 , wherein the second data represent remaining precincts that are not included in the first data.
10. The method according to claim 9 , wherein the second data is organized so that all data packets for each tile are contiguous and all data packets for each precinct within a tile are contiguous.
11. The method according to claim 7 , further comprising the step of:
c) producing a lookup table that associates a spatial location with a byte-count offset for the start of the data packets for each tile.
12. A method for storing compressed image data, containing one or more tiles and one or more precincts, for subsequent transmission to a display that is viewed by an observer having a point of gaze, comprising the steps of:
a) storing first data that represents a minimum resolution level of image information;
b) storing second data that represents remaining resolution levels of image details using a component-position-resolution level-layer progression ordering; and
c) producing a lookup table that associates a spatial location with a byte-count offset for the start of the data packets for each precinct in each tile.
13. A method for providing a digital image as compressed image data containing one or more tiles and one or more precincts, comprising the steps of:
storing first data of the digital image in a first section of a codestream; and
storing second data of said digital image in a second section of said codestream, using a component-position-resolution level-layer progression ordering, said first data and said second data being differently ordered, said second data being higher resolution image information than said first data.
14. The method of claim 13 wherein the first data has precincts from one or more low resolution levels.
15. The method of claim 14 wherein the second data has all precincts that are not included in the first data.
16. The method of claim 13 wherein the second data is organized so that all data packets for each tile are contiguous and all data packets for each precinct within a tile are contiguous.
17. The method of claim 13 further comprising the step of:
producing a lookup table that associates a spatial location with a byte-count offset for the start of the data packets for each tile.
18. A method for storing a digital image as compressed image data containing one or more tiles and one or more precincts, comprising the steps of:
storing first data of the digital image; and
storing second data of said digital image using a component-position-resolution level-layer progression ordering, said first data and said second data being differently ordered, said second data being higher resolution image information than said first data; and
further comprising the step of:
producing a lookup table that associates a spatial location with a byte-count offset for the start of the data packets for each precinct in each tile.
19. A method for providing a digital image as compressed image data containing one or more tiles and one or more precincts, comprising the steps of:
storing first data of the digital image in a first section of a codestream, using a resolution level-layer-component-position progression ordering; and
storing second data of said digital image in a second section of said codestream, using a component-position-resolution level-layer progression ordering, said second data being higher resolution image information than said first data.
20. The method of claim 19 wherein said first data includes a minimum resolution level and said second data is remaining resolution levels of said digital image.