Image processing device and image processing method

An image processing and image technology, applied in image data processing, conversion of interpolation processing, image analysis, etc., can solve problems such as no record of interpolation frame generation method

Inactive Publication Date: 2011-03-30
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in Patent Document 1, there is no description about an interpolation frame generation method utilizing human visual perception characteristics.

Method used

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  • Image processing device and image processing method
  • Image processing device and image processing method
  • Image processing device and image processing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] First, refer to Figure 1 to Figure 8 The first embodiment will be explained.

[0054] figure 1 It is a block diagram showing an example of the configuration of the video processing apparatus as the first embodiment.

[0055] figure 1 Among them, 100 is an input signal (current frame signal), 101 is an input signal (signal before one frame), 102 is a frame sequence generation unit (frame memory I / F), 103 is an image memory, 104 is a motion vector detection unit, 105 is a frame rate calculation unit, 106 is an interpolation frame generation unit, 107 is a timing control unit, and 108 is a display unit.

[0056] The input signals 100 and 101 are decoded video signal sources, and it is possible to consider the decoded video of the TV video received by the tuner, or the video recorded on the CD, DVD, Blu-rayDisc (Blu-ray Disc) medium, Or the images saved in the hard disk, or the image content on the network, etc.

[0057] The frame sequence generation unit (memory I / F)...

Embodiment 2

[0114] Next, refer to Figures 9 to 13 The second embodiment will be explained. Figure 9 It is a block diagram showing an example of the configuration of the video processing apparatus according to the second embodiment.

[0115] and figure 1 Compared with the structure of , it is a structure obtained by replacing the frame rate calculation unit 105 with the character detection unit 900 . The same structural module due to the figure 1 It has been recorded and therefore omitted.

[0116] exist figure 1 In the structure of , the discrete value of the motion vector histogram of the image is used to calculate the frame rate to improve the recognition degree according to the motion feature of the image, and in this embodiment, the following method is described: using the character detection unit 900 to detect the presence or absence of characters Move (telop), and select the frame rate of the video so that the recognition degree of characters in the video is optimal.

[0117...

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Abstract

The invention provides an image processing device and an image processing method, relates to an interpolation frame producing method when a frame rate is converted by using a motion compensation method, and provides a technique for increasing the effect of delivering image information by utilizing the human vision cognitive characteristic. The method comprises the following steps of: motion vector detecting step for detecting a motion vector of an image, a frame rate calculating step for calculating a frame rate based on the detected motion vector, and an interpolation frame producing step for producing an interpolation frame based on the calculated frame rate, wherein in the frame rate calculating step, a movement feature amount of the image is calculated from the motion vector detected in the motion vector detecting step and the frame rate is calculated in such a manner, so the frame rate of the image with the movement feature amount thereof exceeding a predetermined threshold value is smaller than or equal to the predetermined threshold value.

Description

technical field [0001] The present invention relates to a video device, and more particularly, to a technique for performing frame rate conversion by generating an interpolated frame from a frame in a video signal. Background technique [0002] In recent years, in order to improve unnatural motions such as blurring and jumping in moving image display, high-quality image quality technology to which frame rate conversion is applied has been attracting attention. Generally, a method is used in which an inter-frame motion compensation process is used based on the inter-frame motion vector information of the current frame and the previous frame to generate an interpolated frame, and a smooth motion of the video is interpolated. [0003] In Patent Document 1, for the purpose of "providing a technology capable of performing frame rate conversion with high image quality in order to detect a motion vector more accurately" (refer to Patent Document 1 [0005], it is described that " Ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/14H04N7/01G06T3/40G06T7/20
CPCH04N7/013H04N7/014H04N7/0132
Inventor 坂庭秀纪荻野昌宏佐藤大树
Owner HITACHI LTD
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