Camera calibration method and apparatus, computer device, storage medium, and program product

Patent metadata

Field	Value
Publication number	US-12482135-B2
Application number	US-202318499238-A
Country	US
Kind code	B2
Filing date	Nov 1, 2023
Priority date	Aug 3, 2022
Publication date	Nov 25, 2025
Grant date	Nov 25, 2025

Abstract

The present application relates to a camera calibration method and apparatus, a computer device, a storage medium, and a program product. The method includes: obtaining a first operation instruction based on a camera calibration interface; determining, from configuration information, target configuration information matching the first operation instruction and set based on the camera calibration interface; and then executing a corresponding operation in a camera calibration process based on the first operation instruction and the target configuration information. However, the camera calibration process provided by embodiments of the present application is implemented based on the camera calibration interface, without switching back and forth between a plurality of tools, thereby making the camera calibration process less cumbersome.

First claim

What is claimed is:

1 . A camera calibration method, wherein the method comprises:
obtaining a first operation instruction based on a camera calibration interface; determining target configuration information matching the first operation instruction from configuration information, wherein the configuration information is set based on the camera calibration interface; and executing a corresponding operation in a camera calibration process based on the first operation instruction and the target configuration information, wherein the camera calibration process is implemented based on the camera calibration interface without switching between a camera client and a third-party calibration tool, and the corresponding operation is automatically executed without requiring manual saving of a captured image or manual invocation of a calibration tool.

2 . The method according to claim 1 , wherein the camera calibration interface comprises a functional region, and the functional region comprises a plurality of trigger controls with different functions; and obtaining the first operation instruction based on the camera calibration interface comprises:
obtaining the first operation instruction in response to a first trigger operation on a target control in the functional region, wherein the target control is any one of the plurality of trigger controls with different functions.

3 . The method according to claim 2 , wherein the method further comprises any one of the following:
when the target control is a capture control, the first operation instruction is a capture instruction; when the target control is a remove control, the first operation instruction is a delete instruction; when the target control is a save control, the first operation instruction is a save instruction; and when the target control is a calibration control, the first operation instruction is a calibration instruction.

4 . The method according to claim 3 , wherein executing the corresponding operation in the camera calibration process based on the first operation instruction and the target configuration information comprises any one of the following:
controlling, based on the capture instruction and first target configuration information corresponding to the capture instruction, a target camera to capture an image, wherein the first target configuration information comprises a parameter of the target camera; deleting an image to be deleted based on the delete instruction and second target configuration information corresponding to the delete instruction, wherein the second target configuration information comprises information about the image to be deleted; saving an image to be saved based on the save instruction and third target configuration information corresponding to the save instruction, wherein the third target configuration information comprises information about and a save path of the image to be saved; and calibrating the target camera based on the calibration instruction and fourth target configuration information corresponding to the calibration instruction, to obtain and save a calibrated parameter of the target camera, wherein the fourth target configuration information comprises a target calibration algorithm.

5 . The method according to claim 1 , wherein the camera calibration interface comprises a selection region; and the method further comprises:
obtaining a second operation instruction based on the selection region, wherein the second operation instruction comprises a camera identifier; and determining a target camera corresponding to the camera identifier according to the second operation instruction.

6 . The method according to claim 1 , wherein the method further comprises:
obtaining a third operation instruction based on the selection region, wherein the third operation instruction comprises a calibration algorithm identifier; and determining a target calibration algorithm corresponding to the calibration algorithm identifier according to the third operation instruction.

7 . The method according to claim 1 , wherein the camera calibration interface further comprises a setting control, and the method further comprises:
displaying a setting interface in response to a second trigger operation on the setting control; and obtaining the configuration information based on the setting interface.

8 . The method according to claim 7 , wherein when the camera calibration process is used to calibrate a single camera, the setting interface comprises at least one of a description file name setting bar, a calibration target image file name setting bar, a file save path setting bar, an intrinsic parameter file name setting bar, an extrinsic parameter file name setting bar, a map file name setting bar, a thickness setting bar, a single-pixel width setting bar, a single-pixel height setting bar, a focal length setting bar, an average filter length and width setting bar, and a calibration target feature angle direction setting bar.

9 . The method according to claim 7 , wherein when the camera calibration process is used to calibrate dual cameras, the setting interface comprises at least one of a description file name setting bar, an intrinsic parameter file name setting bar of a first camera, an intrinsic parameter file name setting bar of a second camera, a map file name setting bar of the first camera, a map file name setting bar of the second camera, a calibration target height setting bar, a target object height setting bar, a calibration target center distance setting bar, an initial resolution setting bar, an edge removal percentage setting bar, an overlapping percentage setting bar, an average filter length and width setting bar, and a calibration target feature angle direction setting bar.

10 . The method according to claim 1 , wherein the camera calibration interface further comprises an image display region, and the image display region is used to display an image captured by the target camera and/or a calibration result image.

11 . The method according to claim 1 , wherein the camera calibration interface further comprises an image information display region, and the image information display region is used to display at least one of a logo, a pixel error, and a status of an image captured by the target camera.

12 . The method according to claim 1 , wherein the camera calibration interface further comprises a calibration result control; and the method further comprises:
displaying a calibration result interface in response to a second trigger operation on the calibration result control, wherein the calibration result interface is used to display the calibrated parameter of the target camera.

13 . A computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of a method according to claim 1 .

14 . A computer program product, comprising a computer program that, when executed by a processor, implements the steps of a method according to claim 1 .

15 . The method according to claim 1 , wherein the configuration information comprises a file save path, and executing the corresponding operation in the camera calibration process comprises automatically saving a generated intrinsic parameter file, extrinsic parameter file, and map file in the file save path without manual intervention.

16 . The method according to claim 1 , wherein the configuration information comprises a calibration target feature angle direction, and the corresponding operation in the camera calibration pr

Assignees

• Contemporary Amperex Technology Hong Kong Ltd

Inventors

• Wu Qian
• Chen Jiwei
• Jiang Guannan

Classifications

• H04N23/64

  Computer-aided capture of images, e.g. transfer from script file into camera, check of taken image quality, advice or proposal for image composition or decision on when to take image · CPC title

• H04N23/631

  Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters · CPC title

• G06T7/80 Primary

  Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration · CPC title

• H04N23/62

  Control of parameters via user interfaces · CPC title

• H04N17/002 Primary

  for television cameras · CPC title