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The method and device of the calculation of the visual dialogue

A technology of disparity value and difference value, which is applied in the field of calculating disparity value based on matching cost curve, can solve the problem of inapplicability and achieve the effect of accurate dense disparity map

Active Publication Date: 2017-08-04
RICOH KK
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  • Claims
  • Application Information

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Problems solved by technology

[0007] However, since the threshold is set artificially, there is a problem that the determined threshold is subjective and not suitable for all situations
In addition, the threshold is usually set to a large value in order not to introduce wrong disparity values, which results in a large number of correct disparity values ​​being discarded

Method used

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Embodiment Construction

[0028] In order for those skilled in the art to better understand the present invention, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that in this specification and the drawings, substantially the same steps and elements are denoted by the same reference numerals, and repeated explanation of these steps and elements will be omitted.

[0029] Figure 4 is a flowchart describing a method for calculating disparity according to an embodiment of the present invention. Below, will refer to Figure 4 A method for calculating parallax according to an embodiment of the present invention will be described. Such as Figure 4 As shown, in step S401, the initial matching cost curve of the first pixel in the reference image is obtained according to the reference image and the reference image. According to an example of the present invention, a left image and a right image can be captured by a binocular camer...

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Abstract

Embodiments of the present invention provide a method and device for calculating parallax. The method for calculating the disparity value according to the embodiment of the present invention includes: obtaining the initial matching cost curve of the first pixel point in the reference image according to the reference image and the reference image; determining the minimum matching cost and the penultimate matching cost in the initial matching cost curve Whether the difference between the small values ​​is greater than the predetermined value; when the difference is greater than the predetermined value, the disparity value corresponding to the minimum value of the matching cost in the initial matching cost curve is used as the disparity value of the first pixel point; and when the difference When the value is less than or equal to the predetermined value, the modified matching cost curve of the first pixel is obtained by using the grayscale information, and the disparity value corresponding to the minimum value of the matching cost in the modified matching cost curve is used as the disparity value of the first pixel .

Description

technical field [0001] The present invention relates to a method and a device for calculating a disparity value, and more particularly, the present invention relates to a method and a device for calculating a disparity value based on a matching cost curve. Background technique [0002] With the development of technologies such as 3D reconstruction, virtual reality, etc., disparity information indicating the distance between a camera and a specific object being photographed has been widely used. Through the stereoscopic image matching technology, matching pixel point pairs can be found in the reference image and the reference image about the same 3D scene, and the parallax value corresponding to each pixel point coordinate can be calculated. Furthermore, the disparity value can be used to accurately describe the three-dimensional space information of the scene. [0003] In the process of disparity calculation, a disparity value calculation method has been proposed which calc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/32G06T7/55
Inventor 赵秀洁刘媛刘振华刘殿超师忠超
Owner RICOH KK