Correction parameter obtaining method
A technology for correcting parameters and correcting directions, which is applied in the field of parameter calibration and can solve problems such as differences in shooting angles and poor experience.
Active Publication Date: 2020-06-26
HANGZHOU HIKVISION DIGITAL TECH
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[0003] In the lens installation process of the above-mentioned multi-lens equipment, it is inevitable that there will be differences in shooting angles between different lenses
Due to the differences in shooting angles between different lenses in a multi-lens device, when the multi-lens device switches lenses to capture images for users to view, there are differences between the images captured by the different lenses, for example: an object in the scene is imaged In the upper left corner of the image captured by the lens before switching, the subject is imaged in the lower right corner of the image captured by the lens after switching, and the difference between the images will bring a bad experience to the user
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[0103] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0104] It can be understood that, in order to better meet the needs of users, that is, to expand the range of focal lengths supported by the image acquisition device when taking images, at present, multiple lenses supporting different focal lengths can be set in an image acquisition device. The acquisition device can switch the lens automatically or based on the user's instruction according to the actual situation, so as to use different lenses to shoot the tar...
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The embodiment of the invention provides a correction parameter obtaining method. The method comprises the following steps of obtaining first images of lenses in the to-be-corrected lens group when the lenses shoot the target paper respectively, wherein lenses in the to-be-corrected lens group are lenses with overlapped corresponding focal length sections in the multi-lens equipment, the sizes ofpixel points in the first images are of the same, the focal length and the object distance are of the same when the lenses in the to-be-corrected lens group shoot the first images, and the target paper is provided with a first calibration point; for the first image corresponding to each lens in the to-be-corrected lens group, determining a coordinate position of an imaging point of a first calibration point in the first image; calculating a translation correction parameter of each first lens relative to the second lens based on the coordinate position of the imaging point of the first calibration point in each first image. Therefore, the correction parameters used for correcting the images collected by different lenses in the multi-lens device are obtained.
Description
technical field [0001] The invention relates to the technical field of parameter calibration, in particular to a calibration parameter acquisition method, device and electronic equipment. Background technique [0002] At present, in order to expand the range of focal lengths supported by image acquisition devices such as cameras and cameras, most of them use multi-lens settings to use the set lenses that support different focal lengths to capture images of different focal lengths, and realize the image acquisition equipment. Extension of the range of supported focal lengths. Wherein, the above-mentioned image acquisition device provided with multiple lenses may be referred to as a multi-lens device. [0003] During the lens installation process of the above-mentioned multi-lens device, it is unavoidable that different lenses have different shooting angles. Due to the differences in shooting angles between different lenses in a multi-lens device, when the multi-lens device ...
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IPC IPC(8): H04N5/217H04N5/225G06T7/80
CPCG06T2207/30204G06T2207/30244H04N23/81H04N23/55G06T5/80
Inventor 任健
Owner HANGZHOU HIKVISION DIGITAL TECH