Unlock instant, AI-driven research and patent intelligence for your innovation.
Brightness adjustment method, device and portable terminal for multi-camera splicing
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A brightness adjustment, multi-camera technology, applied in the field of image processing, can solve problems such as affecting visual effects, poor effects, pixel changes, etc.
Active Publication Date: 2020-08-07
ARASHI VISION INC
View PDF6 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
The above method is less effective when dealing with images with large brightness differences, and will cause large changes in pixels in the image that are not in the common area, affecting the visual effect
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0078] see figure 1 A brightness adjustment method for multi-camera splicing provided in Embodiment 1 of the present invention includes the following steps:
[0079] S101. Obtain six original images of six cameras and expand them into longitude and latitude images, and obtain corresponding six sets of overlapping area images;
[0080] see figure 2 , the six cameras are six-eye panoramic cameras, and the six original images taken by the six cameras at the same time and independently exposed are six fisheye images, and the images taken by adjacent cameras all have overlapping perspectives;
[0081] see image 3 , since each camera has an overlapping angle of view with the adjacent camera, the images captured by the adjacent camera have overlapping areas; six sets of overlapping area images are formed between the latitude and longitude maps of the six fisheye images, Mark the six groups of overlapping area images as sI[i] and rI[i], i=1~6, wherein, sI[i] and rI[i] are a pair ...
Embodiment 2
[0114] see Figure 6 The brightness adjustment device for multi-camera splicing provided in Embodiment 2 of the present invention includes:
[0115] The obtaining module 11 is used to obtain six original images of six cameras and expand them into longitude and latitude images, and obtain corresponding six groups of overlapping area images;
[0116] The calculation module 12 is used to map the original image of each camera with a brightness mapping function, and calculate the sum of the brightness differences of the six groups of overlapping region images as the total error;
[0117] The adjustment module 13 is used to adjust the luminance mapping function of each camera separately, so that the total error is minimized, and an optimal luminance mapping function is obtained;
[0118] Dark panorama mosaic module 14, for keeping the brightest image of the dark part in the original image, adjust the optimal brightness mapping function and map all original images for panorama mosai...
Embodiment 3
[0134] Embodiment 3 of the present invention provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the multi-camera splicing brightness as provided in Embodiment 1 of the present invention is realized. Steps in the tuning method.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention provides a multi-camera splicing brightness adjustment method, device and portable terminal. The method includes: acquiring original images of six cameras and corresponding six groups of overlapping area images; mapping the original images of each camera with a brightness mapping function, and calculating the total error of the brightness of the six groups of overlapping area images; respectively Adjusting the brightness mapping function of each camera to minimize the total error of the brightness; adjusting the optimal mapping function and mapping for panorama stitching, respectively generating a dark panorama mosaic image with the brightest dark part and a bright panorama mosaic image with the darkest bright part; Fusion of the dark panorama mosaic image and the bright panorama mosaic image to generate a panorama mosaic image; the technical solution of the present invention adjusts the brightness mapping function of the independently exposed camera to eliminate the brightness difference in the overlapping area, while maintaining the details of the bright and dark parts of the image Unchanged, better to improve the visual effect of the panoramic image.
Description
technical field [0001] The invention belongs to the field of image processing, and in particular relates to a multi-camera splicing brightness adjustment method, device and portable terminal. Background technique [0002] With the continuous development of computer technology and image processing technology, multi-camera image stitching technology has been more and more widely used, such as virtual reality and panoramic images. When obtaining panoramic images, multi-camera image stitching generally requires cameras to shoot from different angles at the same time, and there must be overlapping areas between adjacent images. The image transformation matrix is calculated by using the image matching method through the control point pairs of the same name in the overlapping areas. Thereby splicing into a panoramic image. [0003] In multi-camera panorama stitching, the brightness of the scene in the field of view of each camera is inconsistent. In order to capture more details...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More