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Method for synthesizing picture and device for synthesizing image

A technology for image synthesis and image generation, which is applied in the field of image processing, can solve the problems of serious image noise and low imaging precision, and achieve the effects of improving signal-to-noise ratio, reducing image noise, and improving dynamic range

Active Publication Date: 2018-07-24
BYD SEMICON CO LTD
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Problems solved by technology

Its disadvantage is that the image noise after compression is relatively serious, and the imaging accuracy is low.

Method used

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  • Method for synthesizing picture and device for synthesizing image
  • Method for synthesizing picture and device for synthesizing image
  • Method for synthesizing picture and device for synthesizing image

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Embodiment Construction

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0020] The picture synthesis method and the image synthesis apparatus according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0021] figure 1 It is a flow chart of a picture synthesis method according to an embodiment of the present invention. Such as figure 1 As shown, the picture synthesis method includes the following steps:

[0022] S10: Obtain the long integral picture pic_l and the short integral picture pic_s.

[0023] Specifically, the picture synthe...

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Abstract

The invention discloses a method and a device for synthesizing a picture. The method comprises the following steps of obtaining a long integral picture and a short integral picture; compressing the long integral picture and the short integral picture respectively to form a long integral compressed picture and a short integral compressed picture; obtaining a first weight value corresponding to thelong integral picture and a second weight value corresponding to the short integral picture respectively; generating detail feature, after the long integral picture and the short integral picture arecombined, according to the first weight value, the second weight value, the long integral picture and the short integral picture; obtaining the feature brightness and object brightness after the longintegral picture and the short integral picture are combined; synthesizing the long integral picture and the short integral picture according to the detail feature, the feature brightness and the object brightness after the long integral picture and the short integral picture are combined, so that all the detail features of the long integral picture and the short integral picture can be obtained.The dynamic range of the synthesized picture is improved; the realization is easy; the noise of the picture is reduced, and the signal-to-noise ratio of the synthesized picture is promoted.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an image synthesis method and an image synthesis device. Background technique [0002] With the development of image sensors, the requirements for imaging quality are getting higher and higher, among which, high dynamic range is an important index of imaging quality. The image synthesis in the related art usually adopts the following two methods to improve the dynamic range of the image: [0003] First, the dynamic range of the image is improved by adopting special technology at the image acquisition end. Its shortcomings are that the technical means are more complicated, and the dynamic range of the improvement is limited, and it is difficult to meet the requirements of the market, especially the security monitoring and vehicle imaging markets. [0004] Second, two or three frames of 8-bit low-bit-width low-dynamic-range image data are spliced ​​into 16-bit or even hi...

Claims

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Application Information

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IPC IPC(8): G06T5/50
CPCG06T5/50G06T2207/20221
Inventor 毛水江郭先清傅璟军
Owner BYD SEMICON CO LTD
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