Video evaluation device and method, frame rate determination device, and video process device

Abstract

The invention provides a video evaluating device, a frame rate determining device, a video processing device, a video evaluating method and a video evaluating program, wherein, the frame rate is determined corresponding to motion smoothness of a video; a variation detecting component (1401) extracts a variation on the basis of a plurality of frame images which are included in input video signals (1403) externally inputted as motion image signals and outputs the variation (1405) to a evaluation value calculating element (1402); the evaluation value calculating element (1402) presumes time variation between various frame images according to the variation (1405) and time intervals between the frame images on the basis of frame rate information (105), and calculates an evaluation value which is used for evaluating the motion smoothness of the inputted video according to the time variation; the evaluation value is taken as a factor for determining the frame rate and outputted to the outside.

Description

technical field [0001] The present invention relates to a video evaluation device, a frame rate determination device, a video processing device, a video evaluation method, and a video evaluation program. Background technique [0002] Video processing including video acquisition, storage, transmission, display, encoding, decoding, etc. is generally performed at a fixed frame rate. Here, the frame rate refers to the number of frames processed per second. also. The so-called fixed frame rate means that the number of frames processed per second is set to a certain frame rate. As a specific example of a fixed frame rate, for example, in the standards of the National Television Standards Committee (National Television Standards Committee: NTSC (National Television System Committee system)) adopted by the United States and Japan, it is defined as 29.97fps (frameper second: frame / second ). In addition, it is defined as 25 fps in the Phase Alternating Line (Phase Alternating Line...

AI Technical Summary

Problems solved by technology

[0006] However, when video is processed at a fixed frame rate, if the frame rate is increased to achieve smooth motion, the amount of processing, data volume, and power consumption associated with video processing will increase.

Specifically, for example, when acquiring a video, the number of frames to be acquired per unit time increases, and thus the amount of processing and power consumption associated with the processing increase.

Also, in the case of storing video, since the number of frames to be stored per unit time increases, the amount of data increases

[0007] On the other hand, if the frame rate is reduced in order to reduce the amount of processing, data volume, and power consumption associated with video processing, the motion smoothness of the video will be reduced, resulting in a video with unsmooth motion.

[0008] In addition, in the case of processing video with a variable frame rate, if the frame rate is only changed according to the amount of processing and data of the video, the motion smoothness of the video will be reduced, resulting in an unsmooth motion video

[0009] In this way, if the frame rate is changed without considering the motion characteristics of the video, there will be an unnecessary amount of processing, data volume, and power consumption, resulting in an uneven video.

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