A Shooting Method for Automatic Contrast Adjustment
A shooting method and automatic adjustment technology, applied in the field of shooting, can solve problems such as difficult contrast processing, poor photo or video effect, cumbersome operation, etc., to achieve good effect, no need for manual processing, simple and fast operation
Active Publication Date: 2017-01-25
深圳美图创新科技有限公司
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Problems solved by technology
[0002] In the process of taking photos and videos, due to the uneven light, the photos or videos produced by the photos and videos are not good, so we must use image processing software to process the contrast of the photos, and the operation is cumbersome, especially for video files. it's harder to handle the contrast
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[0048] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0049] Such as figure 1 Shown, a kind of photographing method of automatic contrast adjustment of the present invention, it comprises the following steps:
[0050] 10. Perform histogram statistics of the red channel, green channel, and blue channel for each pixel in the raw data captured by the camera;
[0051]20. Set the clipping value of the shadow part and the highlight part in the original data;
[0052] 30. Calculate the upper limit value of the shadow part and the lower limit value of the highlight part of the red channel, green channel and blue...
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The invention relates to a shooting method with automatic contrast ratio adjustment. In the method, through histogram statistics on original data, in combination with the clipping value of a shade area of the original data and the clipping value of a highlight area of the original data, the upper limit value of the shade area and the lower limit value of the highlight area are calculated; then, the minimum upper limit value and the maximum lower limit value are obtained through extreme value calculation; finally, the final minimum upper limit value and the final maximum lower limit value are obtained through threshold value calculation, a mapping table is obtained according to the final minimum upper limit value and the final maximum lower limit value, and color mapping is performed on all pixel points in the original data to obtain result data. In this way, the contrast ratio of the shade part of the data to the highlight part of the data can be well processed and adjusted to be appropriate, and it is avoided that because the contrast ratio is adjusted too much, image distortion occurs. The shooting method can be applied to the shooting process and can also be applied to the video picture recording process, operation is easy and fast, manual processing is not needed, and the effect is good.
Description
technical field [0001] The invention relates to a shooting method, in particular to a shooting method for automatically adjusting contrast. Background technique [0002] In the process of taking photos and videos, due to the uneven light, the photos or videos produced by the photos and videos are not good, so we must use image processing software to process the contrast of the photos, and the operation is cumbersome, especially for video files. It is more difficult to deal with the contrast. Contents of the invention [0003] In order to solve the above problems, the present invention provides a photographing method for automatically adjusting the contrast, which can be applied not only to the photographing process, but also to the video recording process, with simple operation and good effect. [0004] To achieve the above object, the technical solution adopted in the present invention is: [0005] A shooting method for automatically adjusting contrast, characterized in...
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IPC IPC(8): H04N9/04
Inventor 张伟傅松林胡瑞鑫李志阳
Owner 深圳美图创新科技有限公司