Image processing method and image processing device for portable terminal
A portable terminal and image processing technology, which is applied in the field of image processing, can solve the problems of not being able to shoot, not being able to capture, and ghosting, etc.
Active Publication Date: 2019-01-15
BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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Problems solved by technology
[0006] However, using the method of technical solution 1) can’t capture or shoot moving objects. If there are moving objects in the scene, ghost images will appear, and the file size of the HDR photo stored in this solution is very large.
And the hardware cost of technical scheme 2) is high, and can't adaptively match various models
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[0017] The general inventive idea of the present invention is to provide an image processing method and an image processing device for a portable terminal, which process a single image captured by a camera through software processing to obtain a high-quality high dynamic range image. Specifically, the first image is captured by the camera of the portable terminal, and the brightness of the first image is adjusted to generate a second image with increased brightness and a third image with reduced brightness, and then the first image is combined with the The second image is synthesized with the third image to generate a fourth image and a fifth image, and then the fourth image is synthesized with the fifth image to generate a sixth image. Through the above-mentioned method, it is possible to obtain a sixth image with a high dynamic range by only capturing one image and performing the above-mentioned processing on the premise of not increasing the hardware cost, so that no matte...
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The invention provides an image processing method and image processing apparatus for a portable terminal. The image processing method comprises: based on a single image, executing high-dynamic-range image generation processing; capturing a first image through the camera of the portable terminal; through adjusting the brightness of the first image, respectively generating a second image with higher brightness and a third image with lower brightness; and respectively synthesizing the first image with the second image and the third image to generate a fourth image and a fifth image, and then synthesizing the fourth image with the fifth image to generate a sixth image. By using the image processing method and image processing apparatus for the portable terminal, under the condition that hardware cost is not increased, a high-dynamic-range image can be obtained simply by capturing one image and processing the image, and the high-dynamic-range image with a quite good effect can be obtained no matter a shooting scene is at a mobile state or a stationary state.
Description
technical field [0001] The present invention relates to image processing technology, in particular to an image processing method and image processing device for a portable terminal. Background technique [0002] The dynamic range in the real world scene can reach 1014 orders of magnitude, the human visual system (HVS) can perceive the dynamic range of 105 orders of magnitude, and can perceive the dynamic range of 109 orders of magnitude through the adjustment of the adaptive mechanism of the human visual system. However, the dynamic range of current digital image acquisition equipment and display equipment is relatively limited, only 102-103 orders of magnitude. Therefore, if there are bright areas and dark areas in the image at the same time, due to the limitations of the acquisition device and the display device, the details of the bright area and dark area will be lost. [0003] In order to solve the above problems, the prior art uses high dynamic range image technology ...
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IPC IPC(8): H04N5/232
Inventor 程懿远赵铮
Owner BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD