Image encoding apparatus, image decoding apparatus, and methods of controlling the same

摘要

This invention enables the suppression of block noise even at an intermediate resolution equal to or lower than the original resolution and further increases the number of directly decodable resolutions for higher convenience. For this purpose, a memory 2209 stores original image data photographed by an image sensing unit 2201. A resizing unit 2211 generates resized image data by reducing the numbers of horizontal and vertical pixels of the original image data stored in the memory 2209 to 1/2 and stores the image data in the memory 2209 again. An image compression unit 2204 encodes the original image data and the resized image data by HD Photo®. A CPU 2208 puts the two encoded data into one file and stores it in a nonvolatile memory card connected to an output unit 2207.