Abstract: An encoding device sets a region of interest corresponding to an input image, and prepares, as an intermediate image, data in which the input image is associated with region-of-interest information, designates an embedding position, embeds the region-of-interest information in a pixel value form into the intermediate image in accordance with the embedding position, prepares, as a region-of-interest setting image, data associated with the region-of-interest information, encodes the image by using a predetermined image coding scheme, and outputs an encoded image. A decoding device analyzes a decoded image obtained through decoding, reads the region-of-interest information, prepares, as a region-of-interest information read image, data in which the decoded image is associated with the region-of-interest information, applies a post-filter on the basis of the region-of-interest information read image, and outputs a post-filtered image.

Abstract: The present invention makes it possible to read ROI information of a decoded image without synchronizing the ROI information with the decoded image, and to match the decoded image and the ROI information in their correspondence relation. According to the present disclosure, an encoding device sets a region of interest corresponding to an input image, and prepares, as an intermediate image, data in which the input image is associated with region-of-interest information, designates an embedding position, embeds the region-of-interest information in a pixel value form into the intermediate image in accordance with the embedding position, prepares, as a region-of-interest setting image, data associated with the region-of-interest information, encodes the image by using a predetermined image coding scheme, and outputs an encoded image.

Abstract: To reduce the occurrence of an excessive encoding amount or an insufficient encoding amount and reduce the fluctuation range of the bit rate even when there is a change in the area of a region-of-interest or the properties of an image.

Abstract: To provide an image processing system and an image decoding apparatus that can limit compression ratio decrease and image quality deterioration and efficiently reduce an information amount. An image processing system that compresses and transmits an input image signal including pixel values corresponding to respective pixels, including: a dynamic range compression unit configured to compress, by a predetermined coefficient, a dynamic range of each of the pixel values corresponding to a background region other than a region of interest (ROI) designated as a desired region for the pixel values in an image based on the input image signal, to generate a low dynamic range image signal; a coding compression unit configured to compress the low dynamic range image signal in accordance with a predetermined image coding scheme to generate compressed image data; and a bit stream transmitter configured to output a bit stream signal including ROI information, the predetermined coefficient and the compressed image data.

Abstract: There is provided an image processing device including: a preprocessing unit configured to perform preprocessing for reducing an amount of information of an input image to generate a preprocessed image and supply the preprocessed image to an encoding processing unit that encodes and outputs the preprocessed image, wherein the preprocessing unit includes a transformation unit configured to divide the input image into predetermined blocks, perform transformation processing with a predetermined method, and generate transform blocks, a block-of-interest determination unit configured to hold region information indicating a region of interest or a non region of interest of the input image and determine whether or not each transform block is a block of interest on the basis of the region information, and an information amount reduction unit.

Abstract: The present invention relates to a video distribution system including a video encoding device which generates video data encoded per a unit of frame and a video decoding device which decodes the video data supplied from the video encoding device. The video encoding device includes a predicted image generator which generates a predicted image of a non-key frame, by using a key frame, an updated original image generator which compares each parameter representing a predicted image of the non-key frame with respective parameter values for each parameter representing an original image of the non-key frame, and according to this comparison result, generates an updated original image by selecting parameter values of either the predicted image or the original image for each parameter, and an error correction code generator which generates an error correction code for correcting an error of the updated original image to the non-key frame.

Abstract: To provide an image processing system and an image decoding apparatus that can limit compression ratio decrease and image quality deterioration and efficiently reduce an information amount. An image processing system that compresses and transmits an input image signal including pixel values corresponding to respective pixels, including: a dynamic range compression unit configured to compress, by a predetermined coefficient, a dynamic range of each of the pixel values corresponding to a background region other than a region of interest (ROI) designated as a desired region for the pixel values in an image based on the input image signal, to generate a low dynamic range image signal; a coding compression unit configured to compress the low dynamic range image signal in accordance with a predetermined image coding scheme to generate compressed image data; and a bit stream transmitter configured to output a bit stream signal including ROI information, the predetermined coefficient and the compressed image data.

Abstract: A video image decoding apparatus includes a plurality of predicted image generating units that generate predicted images according to respectively different methods. A predicted image combining unit combines the predicted images generated by the predicted image generating units to obtain a predicted image. A decoding unit decodes an encoded image by using, as side information, the predicted image obtained by the predicted image combining unit.

Abstract: To reduce the occurrence of an excessive encoding amount or an insufficient encoding amount and reduce the fluctuation range of the bit rate even when there is a change in the area of a region-of-interest or the properties of an image.

Abstract: There is provided an image processing device including: a preprocessing unit configured to perform preprocessing for reducing an amount of information of an input image to generate a preprocessed image and supply the preprocessed image to an encoding processing unit that encodes and outputs the preprocessed image, wherein the preprocessing unit includes a transformation unit configured to divide the input image into predetermined blocks, perform transformation processing with a predetermined method, and generate transform blocks, a block-of-interest determination unit configured to hold region information indicating a region of interest or a non region of interest of the input image and determine whether or not each transform block is a block of interest on the basis of the region information, and an information amount reduction unit.

Abstract: An encoding apparatus derives a bit order based on a puncturing table that specifies different puncturing patterns for different transmission rates. The encoding apparatus then generates an error correcting code from an input information bit string and rearranges the error correcting code in the derived bit order. The error correcting code is punctured by taking a number of consecutive bits from the rearranged error correcting code. The number of bits taken varies depending on the transmission rate. The punctured error correcting code is output to a decoding apparatus, which realigns the code bits according to the transmission rate and the puncturing table, then uses the realigned error correcting code to correct errors in erroneous data. Rearrangement of the error correcting code makes the puncturing process more efficient by avoiding the need to decide whether to take or discard each bit individually.

Abstract: A video image decoding apparatus includes a plurality of predicted image generating units that generate predicted images according to respectively different methods. A predicted image combining unit combines the predicted images generated by the predicted image generating units to obtain a predicted image. A decoding unit decodes an encoded image by using, as side information, the predicted image obtained by the predicted image combining unit.

Abstract: The present invention relates to a video distribution system including a video encoding device which generates video data encoded per a unit of frame and a video decoding device which decodes the video data supplied from the video encoding device. The video encoding device includes a predicted image generator which generates a predicted image of a non-key frame, by using a key frame, an updated original image generator which compares each parameter representing a predicted image of the non-key frame with respective parameter values for each parameter representing an original image of the non-key frame, and according to this comparison result, generates an updated original image by selecting parameter values of either the predicted image or the original image for each parameter, and an error correction code generator which generates an error correction code for correcting an error of the updated original image to the non-key frame.

Abstract: An encoding apparatus derives a bit order based on a puncturing table that specifies different puncturing patterns for different transmission rates. The encoding apparatus then generates an error correcting code from an input information bit string and rearranges the error correcting code in the derived bit order. The error correcting code is punctured by taking a number of consecutive bits from the rearranged error correcting code. The number of bits taken varies depending on the transmission rate. The punctured error correcting code is output to a decoding apparatus, which realigns the code bits according to the transmission rate and the puncturing table, then uses the realigned error correcting code to correct errors in erroneous data. Rearrangement of the error correcting code makes the puncturing process more efficient by avoiding the need to decide whether to take or discard each bit individually.