Abstract: Image signals are encoded following a spatial decomposition pattern that is based on a selected location within the image. The resulting sequence of sets of encoded image signals may be transmitted to a remote node for decoding and display. The display of the decoded signals is progressively updated as subsequent sets of encoded image signals are received and decoded. In a prefeired embodiment, the first set of encoded image signals comprises DC transformed signals corresponding to the original image, while the subsequent sets of encoded signals comprise AC transformed signals corresponding to the original image.

Abstract: Image signals are encoded following a spatial decomposition pattern that is based on a selected location within the image. The resulting sequence of sets of encoded image signals may be transmitted to a remote node for decoding and display. The display of the decoded signals is progressively updated as subsequent sets of encoded image signals are received and decoded. In a preferred embodiment, the first set of encoded image signals comprises DC transformed signals corresponding to the original image, while the subsequent sets of encoded signals comprise AC transformed signals corresponding to the original image.

Abstract: An original image is encoded using difference signals that correspond to the difference between the original image and a blur image that approximates the original image. The blur image is generated using DC signals, wherein each DC signal corresponds to a different block of the original image.

Abstract: An image is divided into a plurality of blocks and a first transform is applied to each of the blocks to generate a plurality of first transformed blocks, wherein each of the first transformed blocks comprises a DC first transformed signal and a plurality of AC first transformed signals. A second transform is applied to the DC first transformed signals for all of the first transformed blocks to generate a plurality of second transformed signals. The second transformed signals are encoded and then the AC first transformed signals are encoded.