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Device for acquiring depth image, calibrating method and measuring method therefor

A depth image and capture device technology, applied in the field of depth image capture, can solve problems such as too small image resolution, and achieve the effect of simplifying complicated correction and simplifying difficulty

Active Publication Date: 2014-07-02
IND TECH RES INST
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  • Application Information

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Problems solved by technology

Therefore, if the shape of the object to be tested is too large and exceeds the viewing angle range, it is necessary to rely on manpower to adjust the position of the fixed-focus depth camera; That is, the image resolution is too small), and it is impossible to perform depth sensing through the captured image

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  • Device for acquiring depth image, calibrating method and measuring method therefor
  • Device for acquiring depth image, calibrating method and measuring method therefor
  • Device for acquiring depth image, calibrating method and measuring method therefor

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Embodiment Construction

[0059] Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In addition, wherever possible, elements / components / symbols with the same reference numerals are used in the drawings and embodiments to represent the same or similar parts.

[0060] The depth image capture device described in the embodiment of the present invention can enable the zoom-type depth image capture device to perform depth image measurement in a larger field of view without changing the hardware architecture, and can also target objects to be measured in some areas Perform high-resolution detail measurement; when performing detail measurement, you can freely specify the distance of the measurement position (standoff), and maintain the accuracy of the captured image, thereby improving the depth of the general fixed-focus method The accuracy of image measurement technology in detail measurement.

[0061] In...

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Abstract

A device for acquiring depth image, a calibrating method and a measuring method therefore are provided. The device includes at least one projecting device, at least one image sensing device, a mechanism device and a processing unit. The projecting device projects a projection pattern to a measured object. The image sensing device is controlled to adjust a focal length and focus position, and therefore sense real images. The mechanism device adjusts a location and / or a convergence angle of the image sensing device. The processing unit calibrates the at least one image sensing device and generates a three dimension (3D) measuring parameter set at a model focal length according to a plurality of image setting parameter reference sets corresponding to a model focal length and a plurality of default node distances, respectively, and then estimates a depth map or depth information of the measured object.

Description

technical field [0001] The present invention relates to a depth image capture technology, and in particular to a zoom-type depth image capture device, a calibration method and a measurement method thereof. Background technique [0002] Today's image sensing technology is becoming more and more mature. In addition to obtaining two-dimensional images, many image sensors can effectively, real-time and stably obtain the third-dimensional (ie depth) information of the object under test, which is the current development of depth image sensing technology. on the subject. Depth image sensing technology can provide relatively complete three-dimensional space information because it can estimate the distance between the image capture device and the object to be measured. Therefore, it can be designed as an interactive browsing device operation interface and somatosensory games, and it is also gradually applied in In the fields of security image monitoring, robot vision and medical ima...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C11/00G01C25/00H04N13/239
CPCG06T7/002H04N13/0246H04N13/0239H04N2213/001H04N13/246H04N13/239G06T2207/10012G06T2207/10028G06T7/571H04N13/254H04N13/296
Inventor 刘通发罗文秀陈加珍
Owner IND TECH RES INST
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