Wide dynamic fusion method based on single-frame double-pulse exposure mode

A fusion method and wide dynamic technology, applied in the field of image processing, can solve the problems of color distortion and easy loss of image details, and achieve the effect of true color, improved dynamic range and good protection.

Active Publication Date: 2015-05-20
SHANGHAI MICROSHARP INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this mode, if the image fusion is not handled well, it is easy to lose image details and the color will be distorted.

Method used

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  • Wide dynamic fusion method based on single-frame double-pulse exposure mode
  • Wide dynamic fusion method based on single-frame double-pulse exposure mode
  • Wide dynamic fusion method based on single-frame double-pulse exposure mode

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Embodiment Construction

[0056] 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.

[0057] Such as figure 1 , figure 2 , image 3 As shown, a wide dynamic fusion method based on a single-frame double-exposure mode provided in this embodiment, the method includes:

[0058] Step S1: Obtain long-exposure pixels and short-exposure pixels according to the exposure format;

[0059] Obtain long exposure pixels and short exposure pixels according to the exposure format; specifically, first determine the positions of the long exposure and short ex...

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Abstract

The invention discloses a wide dynamic fusion method based on a single-frame double-pulse exposure mode. The method comprises the following steps of acquiring a long exposure pixel and a short exposure pixel according to an exposure format; calculating and acquiring a mapping curve according to a ratio of the long exposure pixel to the short exposure pixel and bright and dark regions of the pixels; performing long exposure pixel mapping and short exposure pixel mapping according to the long exposure pixel, the short exposure pixel and the mapping curve; judging the edge direction of the long exposure pixel and/or the short exposure pixel and acquiring the interpolation of the edge direction of the long exposure pixel and/or the short exposure pixel; and fusing long exposure and short exposure according to the long exposure pixel mapping, the short exposure pixel mapping and the interpolation of the edge direction of the long exposure pixel and/or the short exposure pixel. By the wide dynamic fusion method based on the single-frame double-pulse exposure mode, a promoted dynamic range is wide, details of an image are protected well, and the color is real.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a wide dynamic fusion method based on a single-frame double-exposure mode. Background technique [0002] Wide dynamic technology is a technology used to allow the camera to see the characteristics of the image under very strong contrast. When high-brightness areas illuminated by strong light sources (sunlight, lamps, or reflections, etc.) and relatively low-brightness areas such as shadows and backlights exist in the image at the same time, the image output by the camera will appear bright areas that become white due to overexposure. However, dark areas become black due to underexposure, seriously affecting image quality. The performance of the camera in the brightest area and the darker area in the same scene is limited, and this limitation is the dynamic range of the camera. The dynamic range of an ordinary camera is only 60db, that is, when the illuminance ratio of the bright...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/04H04N5/235G06T5/00
Inventor 周艇
Owner SHANGHAI MICROSHARP INTELLIGENT TECH CO LTD
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