Abstract: The present invention relates to a method for browsing images and an Image browser. The browsing is performed on a display of an electronic device having an image cache and includes the acts of determining an image, from accessible images not already stored in the image cache, being more likely to be displayed during the browsing than one image already stored in the image cache, storing the determined image in the image cache, shifting images presented on the display in response to a user input and at an image shifting rate of S. Said shifting images includes reading image data from the image cache and present the image on the display.

Abstract: There is provided a method for compressing images and an image format. The method comprises performing a transform on pixel portions of image data and evaluating resulting coefficients from each transform in terms of a flatness condition. If the transform is found to be flat then the result from the transform is quantized according to a first quantizing scheme. If the transform is found not to be flat then the result from the transform is quantized according to a second quantizing scheme being different from the first quantizing scheme. Different block arranging schemes are proposed for the quantizing schemes. An indicator is stored in the block indicating that the image block is flat or not flat. The resulting bits are written into a compression data structure.

Abstract: The present invention relates to a method for browsing images and an Image browser. The browsing is performed on a display of an electronic device having an image cache and includes the acts of determining an image, from accessible images not already stored in the image cache, being more likely to be displayed during the browsing than one image already stored in the image cache, storing the determined image in the image cache, shifting images presented on the display in response to a user input and at an image shifting rate of S. Said shifting images includes reading image data from the image cache and present the image on the display.

Abstract: There is provided a method for compressing images and an image format. The method comprises performing a transform on pixel portions of image data and evaluating resulting coefficients from each transform in terms of a flatness condition. If the transform is found to be flat then the result from the transform is quantized according to a first quantizing scheme. If the transform is found not to be flat then the result from the transform is quantized according to a second quantizing scheme being different from the first quantizing scheme. Different block arranging schemes are proposed for the quantizing schemes. An indicator is stored in the block indicating that the image block is flat or not flat. The resulting bits are written into a compression data structure.