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IMU information-based wide dynamic image fusion method

A wide dynamic image and fusion method technology, applied in the field of image processing, can solve problems such as smearing and image ghosting

Inactive Publication Date: 2016-10-26
深圳市优象计算技术有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the phenomenon of ghosting and smearing caused by random shaking of the image during the shooting process, the present invention proposes a wide dynamic image fusion method based on IMU information

Method used

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  • IMU information-based wide dynamic image fusion method

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Embodiment Construction

[0054] In the following, a method for fusing wide dynamic images based on IMU information in the present invention will be described in detail in conjunction with specific embodiments.

[0055] The first step: if figure 1 As shown, firstly, the image sequences under different exposures are collected, and the tripod is used as a fixed device to stabilize the shake. By setting the automatic exposure and focusing of the carrier camera, multiple frames of images containing details of bright and dark areas in the same scene are obtained. The detailed information that can be clearly displayed in images under different exposures is different. Three frames of images are selected from the multi-frame images (exposures are -3EV shortest exposure image frame, 0EV moderate exposure image frame, +3EV longest exposure image frame) as The experimental object is input into the ISP image processing system, and at the same time, the camera is used as the carrier, and the IMU sensor information...

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Abstract

The invention discloses an IMU information-based wide dynamic image fusion method. According to the method, different shutter time is set, the same scene is subjected to multiple times of long exposure and short exposure, and then three frames of images of which bright and dark area contrasts are relatively large are selected, including the shortest exposure image frame, the moderate exposure image frame, and the longest exposure image frame; the three frames of images are divided into M areas respectively, each area is subjected to Euler angle multi-data fusion attitude calculation based on information detected by an IMU sensor to obtain a motion vector of each area, and a motion vector mean is calculated to be used as a correcting value to perform registration correction on each image frame; and the different exposure images that are corrected are subjected to segmented linear fitting by adoption of the least square method in combination with a camera response function and a luminance mapping function, then wide dynamic images are obtained through mapping, and finally, the wide dynamic images are fused by a multi-frame accumulation method. Through adoption of the method, a phenomenon that a transition area generated by direct fusion of two frames of images is unnatural is optimized, and thus the clear and natural wide dynamic images are obtained.

Description

technical field [0001] The invention belongs to the technical field of image processing, and relates to a wide dynamic image fusion method, in particular to a wide dynamic image fusion method based on IMU information. Background technique [0002] In real life, we often encounter such a problem that there are both high-brightness and low-brightness scenes in the same scene. For example, when we are indoors in summer, we can see brighter outdoor scenes under strong light and relatively dark indoor scenes at the same time. Scenes. This is due to the high imaging ability of the human eye under natural light, and most of the detailed information in wide dynamic range scenes can be obtained, but this phenomenon will occur when ordinary imaging equipment records all detailed information at the same time: when choosing a suitable exposure When the image information of the outdoor brighter place is captured at a high exposure level, the information of the indoor scene is seriously ...

Claims

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Application Information

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IPC IPC(8): H04N5/235H04N5/232H04N5/217
CPCH04N23/81H04N23/682H04N23/741
Inventor 罗文峰
Owner 深圳市优象计算技术有限公司
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