19. The method of claim 18 , wherein the determining the text mask comprises decomposing the image, the decomposing comprising applying a plurality of filters to the image to identify the text-background layer, the text layer, and a picture layer.
19. The method of claim 18 , wherein the determining the text mask comprises decomposing the image, the decomposing comprising applying a plurality of filters to the image to identify the text-background layer, the text layer, and a picture layer. 20. The method of claim 19 , further comprising: determining a picture mask from the picture layer of the image, the picture mask comprising at least one of a first low contrast image portion or a second low contrast image portion comprising at least one high contrast image portion within the second low contrast image portion; encoding at least a portion of the picture mask to generate an encoded picture mask; and transmitting the encoded picture mask.