JPEG compatible image file format using multiple application segments
View Patent ↗An image format for storing digital images within a baseline DCT compatible bitstream comprises entropy coded image data, a first application marker storing a first data value using a first encoding method to convey a first information value related to the image, and a second application marker storing a second data value using a second encoding method to convey the same said first information value related to the image. More specifically, the first application marker uses TIFF tags within an Exif application marker and the second application marker uses a FlashPix compatible structured storage stream, while the entropy coded data includes restart markers to define tile boundaries within the entropy coded image data.
1. A computer readable medium encoded with a data structure, the data structure comprising an image file format comprising:
entropy coded image data;
a first application segment including a first application marker, a first application segment length, and a plurality of TIFF tags, the TIFF tags encoding a plurality of information values related to the image; and
a second application segment including a second application marker, a second application segment length which is different from the first application segment length, and encoded audio data, the encoded audio data being encoded using a second encoding other than TIFF tags.
2. The image file format of claim 1 wherein the first application segment is an Exif application segment.
3. The image file format of claim 1 wherein the second encoding uses a FlashPix compatible structured storage stream.
4. A computer readable medium encoded with a data structure, the data structure comprising an image file format comprising:
entropy coded image data;
a first application segment including a first application marker, a first application segment length, and a plurality of TIFF tags, the TIFF tags encoding a plurality of information values related to the image; and
a plurality of additional application segments, each additional application segment including an application marker, wherein the plurality of additional application segments is used for encoding a single stream of data.
5. The image file format of claim 4 wherein the single stream of data is audio data.
6. The image file format of claim 4 wherein the first application segment is an Exif application segment.
7. The image file format of claim 4 wherein the second encoding uses a FlashPix compatible structured storage stream.