Arcsoft Corporation Limited

Multimedia Image Solution Limited

Wang Miao

Li Yu

Jin Wang

Menghan Liu

Xin Fan

Jian-Hua Lin

Lei Yuan

Disclosed in the present disclosure is a calibration parameter obtaining method and apparatus, a processor, and an electronic device. The method includes that: multiple image collection elements are used to capture a calibration image in a calibration scene to obtain multiple images; point sets are obtained from the multiple images, and the point sets are imaging points corresponding to three-dimensional points on the surface of the calibration image in the multiple images; and calibration parameters to be used of the multiple image collection elements are obtained according to the point sets. The present disclosure solves the technical problem in the related art that multiple cameras cannot be integrally calibrated.

Calibration parameter obtaining method and apparatus, processor, and electronic device

The present invention provides a method and a device for image rectification, which are applied in the field of image processing. The method includes: receiving two images, the two images are images of a target object captured from different viewpoints; performing an epipolar rectification on the two images; rectifying the two images after the epipolar rectification based on the image contents; and splicing the two images after the rectification based on the image contents. The method can rectify the images captured from different viewpoints, thereby ensuring the pixel alignment, and avoiding visual discomfort to the viewer.

Method and device for image rectification

The present invention provides a method and a device for image rectification, which is applied to the field of image processing. The method includes: receiving two images, wherein the two images are images of a target object captured at different viewpoints, and an image capturing device configured to capture the two images, includes a first image capturing device and a second image capturing device; determining positions of corresponding feature point pairs in the two images; and aligning the two images according to the positions of the feature point pairs and parameters of the first image capturing device and the second image capturing device. The above-mentioned method can rectify the images captured at different viewpoints, thereby ensuring the alignment of pixels, and avoiding visual discomfort of the viewer.

The present invention provides a method and a device for calibration applied to the field of image processing. The method includes: acquiring a common two-dimensional image and an infrared image of a calibration object, wherein the calibration object carries a first pattern; calculating coordinates of the first pattern in the common two-dimensional image, acquiring coordinates of the first pattern in a global coordinate system, and calculating intrinsic parameters of a first camera device capturing the common two-dimensional image; and calculating coordinates of the first pattern in the infrared image, acquiring the coordinates of the first pattern in the global coordinate system, and calculating intrinsic parameters of a second camera device capturing the infrared image. The method for calibration is capable of enhancing calibration efficiency by a simple calibration method when calibrating a depth camera device.

Method and device for calibration

The present invention provides a method and a device for verification applied to the field of image processing. The method includes: acquiring a common two-dimensional image, an infrared image and a depth map of a calibration object, wherein the calibration object carries a first pattern; calculating coordinates of an image formed on the infrared image by the first pattern, acquiring a depth value of the first pattern according to the depth map, and calculating a position of a projection formed on the common two-dimensional image by a three-dimensional point cloud corresponding to the image formed on the infrared image by the first pattern, and calculating a distance between an image and the projection formed on the common two-dimensional image by the first pattern. The method and device for verification provided by the present invention can verify a calibration parameter obtained after calibration performed by a depth camera device, enhancing calibration accuracy.

Method and device for verification

The present invention is to provide an image processing equipment and method, for enabling an electronic device having a plurality of image capturing elements installed thereon to capture calibration sample images of a parameter calibration module and verification sample images of a parameter verification module, wherein the parameter calibration module is formed by four calibration identification boards each having a chess board pattern printed thereon and arranged parallelly in a predetermined angle with each other, the parameter verification module is formed by four verification identification boards each having a chess board pattern printed thereon and arranged in parallel with each other, so as for the electronic device to promptly calibrate the intrinsic and extrinsic parameters of the mage capturing elements according to the calibration sample images and then to promptly verify the correctness of the calibrated intrinsic and extrinsic parameters according to the verification sample images.

Equipment and method for promptly performing calibration and verification of intrinsic and extrinsic parameters of a plurality of image capturing elements installed on electronic device

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Hangzhou, China

Wang Miao