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Method for achieving image collection and depth measurement simultaneously through a camera

A technology for image acquisition and depth measurement, which is applied in the directions of measuring devices, image data processing, and image and image conversion, can solve problems such as false alarms, low accuracy, and difficult application requirements, and achieve expanded measurement range, low cost, and adaptability strong effect

Inactive Publication Date: 2016-07-27
NANJING TYCHO INFORMATION TECH +1
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Problems solved by technology

Therefore, the existing shape condition detection methods have defects in the actual application process, and it is difficult to meet the application requirements well.
[0004] In the prior art, the accuracy rate of the method of detecting the surface condition of the measured object purely through image recognition processing is not high, and false alarms often occur

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  • Method for achieving image collection and depth measurement simultaneously through a camera
  • Method for achieving image collection and depth measurement simultaneously through a camera
  • Method for achieving image collection and depth measurement simultaneously through a camera

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0032] The invention is mainly applicable to the surface of a wheel-like object rotating at a uniform speed. see figure 1 , the system for image acquisition and depth information measurement using a single camera consists of an area array CCD camera 101 , a wheel or wheel-like object 102 , a laser projector 103 and a computer 105 . The measurement process is as follows: the laser projector 103 projects the line laser onto the surface of the wheel or wheel-like object 102 to form a light section curve 104, and the area array camera 101 performs image acquisition with a fixed frame rate on the surface of the object 102 rotating at a constant speed along the direction of the arrow, The field of view of the camera includes the light section curve 104 , and the obtained sequence images are stored in the computer 105 .

[0033] see figure 2 , the extraction a...

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Abstract

The invention relates to a method for simultaneously realizing image acquisition and depth measurement by using a single camera, comprising the following steps: step 1, projecting line-structured light onto the surface of the object to be measured, which forms a light section curve on the surface of the object to be measured, and using a single camera at the same time The camera continuously shoots the surface of the wheeled rotating object at a certain frame rate, and stores the captured original sequence images; the light section curve is included in the surface image; step 2, performs image correction and splicing processing on the original sequence image sequence, and obtains The complete image of the measured object; step 3, using the line-structured light direct optical triangulation method to obtain the depth information of the object surface where the line-structured light is located in each image. The present invention can complete image acquisition under a large field of view, and the depth information measured by the aid of line structured light can be positioned to its corresponding surface position, so as to simultaneously acquire the image information corresponding to the depth information, thereby more comprehensively acquiring Measure the shape of the object.

Description

technical field [0001] The invention relates to a single-camera information collection method, in particular to a method for simultaneously realizing image collection and depth measurement by using a single area array CCD camera combined with structured light. Background technique [0002] At present, the use of a single camera to achieve object surface image acquisition or depth measurement has been widely used in engineering. For objects moving at a constant speed, the line scan camera can realize high-precision and complete imaging of the surface of the object through uninterrupted scanning, so as to uniformly detect its surface condition. When the field of view is extremely large or the measured object is a long and thin strip, it is suitable to use a line scan camera, but the line scan camera cannot achieve depth measurement. Area array cameras can only image objects within the field of view, and cannot obtain high-precision and complete imaging within a large field of...

Claims

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Application Information

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IPC IPC(8): G01B11/22G06T3/40
CPCG01B11/22G06T3/4038
Inventor 石峥映郭其昌刘虹丹田裕鹏蒋银男梅劲松董智源张兆贵
Owner NANJING TYCHO INFORMATION TECH
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