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When generating code data by compressing dynamic image data, it is possible to generate code data having a code amount not greater than a predetermined value and having a high-quality decoded image.
It is possible to provide a quality index value calculation method, an information processing device, a dynamic image distribution system, and a quality index value calculation program which can calculate a quality index value indicating almost the same quality as the dynamic image data quality judged by a human.
According to the instruction from the judgment unit (25), a selection unit (26) selects still image data or dynamic image data to be used as video data to be thumbnail-displayed for each of thumbnails list-displayed on a screen and outputs the selected one to a thumbnail display control unit (21).
Provided is an image processing device which can perform highly-accurate positioning while suppressing complicated calculations by using motion information between images recorded in dynamic image data.
The judgment data acquisition means (1a) acquires judgment data to judge changes in exciments of audience for a broadcast program during the broadcast time of the broadcast program in which the dynamic image data is broadcasted.
A dynamic image encoding device (100) includes: a region division unit (101) for dividing a frame image constituting dynamic image data as an object to be encoded into a plurality of regions; an encoding unit (104) for encoding images of the respective regions; an inverse conversion unit (105) and an addition unit (106) for generating a reproduction image of the encoded image; a storage unit (107) for storing reproduced image; a prediction generation unit (108) for searching for a region of an image adjacent to the region of the image to be encoded in a predetermined positional relationship and having a high correlation with the reproduced image of the template region as a part of the reproduced image, from the reproduced image, and deciding a prediction signal according to the searched region and the positional relationship; and a subtraction unit (102) for generating a differential signal between the prediction signal and the encoding object image as a signal for encoding.
A quality index value S is calculated according to the calculated quality index value S', the error region ratio Q, and the pixel difference degree N. Thus, it is possible to realize calculation of the quality index value indicating almost the same quality as the dynamic image data quality judged by a human.
In the resolution increasing process, resolution of the recorded low-resolution dynamic image data LF(t) is increased by using the resolution increasing parameter P(t) learned in the recording process.
Furthermore, the dynamic image data is distributed via a transmission path set between the WEB read server (4) and the video telephone (32) by a line exchange to the video telephone (32) so as to be displayed there.
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