Image acquisition device and image deformation detection method thereof
A technology of an image acquisition device and a detection method, which is applied in the directions of image communication, television, electrical components, etc., can solve the problems of lens shift or rotation change, correction parameters no longer conforming, and left and right picture levels do not match, so as to improve accuracy. Effect
Active Publication Date: 2017-09-01
ALTEK SEMICON
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Problems solved by technology
In the future, when the user operates the image acquisition device, the image acquisition device can use the factory preset calibration parameters to correct the image acquired through the dual lens to overcome the lack of precision in the process
[0003] However, when the image acquisition device is squeezed, bumped or dropped when the user is operating or carrying the image acquisition device, the lens may be displaced or rotated and other changes in spatial position may occur.
Once the lens is shifted or deformed, the calibration parameters preset in the factory no longer meet the current application conditions, and the image acquisition device cannot obtain correct depth information
For example, if there is a problem of level imbalance between the two lenses of the stereoscopic image acquisition device, the level of the left and right images captured after the imbalance will not match, which will further lead to poor 3D stereoscopic shooting effect
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[0038] When the image acquisition device leaves the factory, the spatial setting relationship between the two lenses has been precisely calculated and adjusted, and a set of factory preset correction parameters has been generated accordingly. The factory-preset correction parameters are used to correct the images acquired by different lenses to a designed and fixed coordinate parameter relationship. In order to solve the situation that the factory preset correction parameters are no longer applicable due to the displacement or rotation of the dual lens, the present invention uses the left and right images for deformation detection in real time, so as to judge whether there are factory preset correction parameters or the current correction A condition occurs where a parameter is no longer applicable. In order to make the content of the present invention clearer, the following examples are listed as examples in which the present invention can actually be implemented.
[0039] ...
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The invention provides an image acquisition device and an image deformation detection method thereof. The image deformation detection method is suitable for an image acquisition device with a first image sensor and a second image sensor, and includes the following steps. The first image is acquired by the first image sensor, and the second image is acquired by the second image sensor. Deformation detection is performed according to the first image and the second image to obtain comparison information between the first image and the second image. It is determined whether the coordinate parameter relationship between the first image and the second image has changed according to the comparison information. Wherein, the coordinate parameter relationship is associated with the spatial arrangement relationship between the first image sensor and the second image sensor.
Description
technical field [0001] The present invention relates to an image acquisition device, and in particular to an image acquisition device and an image deformation detection method thereof. Background technique [0002] For the current image depth sensing technology, it is a common method to use an image acquisition device with dual lenses to acquire images corresponding to different viewing angles, and the 3D depth information of the target can be calculated through the images corresponding to different viewing angles . Therefore, in order to accurately obtain the three-dimensional depth information of the target object from the two-dimensional image, the spatial arrangement relationship between the two lenses needs to be specially designed, and precise parameter correction is a necessary step. Furthermore, when the factory manufactures the image acquisition device with dual lenses, the corresponding spatial positions of the dual lenses cannot be set extremely accurately at the...
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IPC IPC(8): H04N17/00H04N13/02
Inventor 王煜智周宏隆庄哲纶王耀笙
Owner ALTEK SEMICON