Encoding device, encoding method, encoding program, and imaging device

Abstract

It is possible to transfer data from an image processing unit to an encoding unit without using an external memory and to perform high-speed processing by internal transmission having a wider band than the external memory. An entire image (41)of an original image is divided into six (644)-pixel blocks. Enlargement processing is performed for each of the blocks. Data is read from each of the blocks in the order of the number assigned such as 1, 2, 3 .... The first block is processed by a size modification unit to generate image data on a (1288)-pixel block (42). A unit of (168)-pixel micro block (43) is read out from the image data (42) and encoded to obtain JPEG data (44). A code rearrangement unit rearranges the order of JPEG data (46) in the block unit, thereby generating JPEG data (48). When the JPEG data (48) in this order is decoded, it is possible to obtain an decoded image (49) whose block order coincides with the area (41) of the original image.

Description

technical field [0001] The present invention relates to an encoding device, an encoding method, an encoding program, and an imaging device applicable to image signal compression and the like. Background technique [0002] In imaging devices such as digital cameras, image processing such as image distortion correction processing, chromatic aberration correction processing, and image size enlargement or reduction processing is often performed. In addition, image data that occurs in image processing is usually compressed by compression coding such as JPEG (Joint Photographic Experts Group), MPEG (Motion Picture Experts Group), and the like. In such compression coding, coding is performed in units of images called macroblocks. [0003] For image processing, image data is read from the memory, and processing such as interpolation is performed. When encoding, the area size after the image size change is set to the size of a macroblock. As described above, since the image size i...

AI Technical Summary

Problems solved by technology

In this document, after the MPEG stream is generated, rearrangement is performed in units of macroblocks, and even if the MPEG stream is decoded as it is on the receiving side, the image cannot be viewed as a result.

[0012] As mentioned above, when image processing such as image size change is performed, when the image data is divided into coding units for compression encoding and encoded, high-speed readout from the memory occurs. Necessity, creating problems requiring large memory

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