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Motion Vector Detection Device

A motion vector and detection device technology, used in image data processing, television, instruments, etc., can solve the problems of destroying the high-frequency components and missing characteristics of the original image and projection data, and achieve accurate horizontal motion vector detection and accurate vertical direction. The effect of motion vector detection

Inactive Publication Date: 2011-12-14
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] Also, in the smoothing method using a low-pass filter disclosed in Patent Document 4, since the high-frequency components (characteristics) of the applied original image and projection data are obviously destroyed, necessary characteristics may be lost when calculating motion vectors. (Feature amount)

Method used

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Experimental program
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Embodiment approach 1

[0058]

[0059] figure 1 It is a block diagram showing the configuration of main parts of the motion vector detection device 1 according to Embodiment 1 of the present invention.

[0060] The motion vector detection device 1 detects, for example, an image motion vector representing movement of a subject within a screen in a moving image, and detects a motion vector between frame images of a previous frame and a subsequent frame in a temporally contextual relationship. The motion vector detected by the motion vector detection device 1 is used for camera shake correction and the like. Additionally, by performing figure 2 The frame image input to the motion vector detection device 1 is read out by pixel scanning in the horizontal direction and line scanning in the vertical direction as shown.

[0061] The motion vector detection device 1 has an input terminal 11 , a horizontal motion vector detection unit 2 , a vertical motion vector detection unit 4 , and two output termina...

Embodiment approach 2

[0268]

[0269] A motion vector detection device 1A according to Embodiment 2 of the present invention has the same figure 1 The motion vector detection device 1 according to Embodiment 1 shown has a similar configuration, but the configurations of the horizontal motion vector detection unit and the vertical motion vector detection unit are different from those of the first embodiment. refer to Figure 18 and Figure 19 , the configurations of the horizontal motion vector detection unit 2A and the vertical motion vector detection unit 4A of the motion vector detection device 1A will be described.

[0270] Figure 18 It is a block diagram showing the configuration of main parts of the horizontal motion vector detection unit 2A. In addition, in Figure 18 In , parts having the same functions as those in Embodiment 1 are given the same reference numerals.

[0271] In the horizontal motion vector detection unit 2A, the arrangement of the vertical image division unit 21 and...

Embodiment approach 3

[0290]

[0291] Such as figure 1 As shown, the motion vector detection device 1B according to Embodiment 3 of the present invention has a configuration similar to that of the motion vector detection device 1 according to Embodiment 1, but the configurations of the horizontal motion vector detection unit and the vertical motion vector detection unit are different.

[0292] Next, the configurations of the horizontal motion vector detection unit 2B and the vertical motion vector detection unit 4B of the motion vector detection device 1B will be described.

[0293] Figure 20 It is a block diagram showing the configuration of main parts of the horizontal motion vector detection unit 2B. In addition, in Figure 20 Here, parts having the same functions as those of the horizontal motion vector detection unit 2 described in Embodiment 1 are given the same reference numerals, and redundant descriptions are omitted.

[0294] The horizontal motion vector detection unit 2B has an in...

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Abstract

The present invention relates to a motion vector detection device capable of detecting motion vectors of the entire frame image with high reliability. In a peak detector (317), a relative position (horizontal direction motion vector) as a reference value is used as a comparison object. The relative position of is sequentially moved from the negative side to the positive side, and the size of the n-valued data in the vertical direction of the two relative positions is compared each time. In this case, the n-arized data of the vertical block determined to be larger by the comparison is changed to a reference value (or the reference value is maintained), and a comparison with the next relative position to be compared is performed. By repeating this process, the maximum value Pn (peak value) of the vertical block n-arized data is obtained.

Description

technical field [0001] The present invention relates to a motion vector detecting device which detects a motion vector between frame images with respect to a previous frame and a subsequent frame in a temporally contextual relationship. Background technique [0002] As a conventional motion vector detection technique, Patent Document 1 describes a method of dividing an image into a plurality of blocks, detecting an edge for each block, and tracking the movement of the edge to detect a motion vector. In this method, in order to reduce false judgments when the spatial frequency is low and there are no characteristic patterns like the sky, and when the spatial frequency is high and there are many characteristic points like the lattice gate, weighting is performed using the number of edges of each block , to evaluate reliability. Also, a zero crossing method or the like is used as a method of edge detection. [0003] Patent Document 1: Japanese Patent No. 3164121 [0004] In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/20H04N5/232
Inventor 助野顺司外田修司幡野喜子小野良树杉山和宏
Owner MITSUBISHI ELECTRIC CORP
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