High dynamic range image shooting method and device

A high dynamic range and shooting method technology, applied in image communication, color TV components, TV system components, etc., can solve problems such as insufficient dynamic range of images, inversion of tone relationship, etc.

Active Publication Date: 2019-08-27
艾酷软件技术(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a high dynamic range image shooting method, device, mobile terminal, and storage medium to solve the prob

Method used

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  • High dynamic range image shooting method and device
  • High dynamic range image shooting method and device
  • High dynamic range image shooting method and device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0018] refer to figure 1 , which shows a flow chart of steps of a method for shooting a high dynamic range image provided by an embodiment of the present invention. The method for shooting a high dynamic range image can be applied to a mobile terminal, and the mobile terminal includes a first camera, a second camera, and a second camera. Three cameras, the shooting method of the high dynamic range image may specifically include the following steps:

[0019] Step 101: Use the first camera to measure light in the shooting area, and determine the target normal exposure value.

[0020] In the embodiment of the present invention, the mobile terminal may be a mobile electronic device such as a mobile phone or a PAD (Portable Android Device, tablet computer).

[0021] The first camera can be a main camera preset on the mobile terminal, and the second camera and the third camera can be two auxiliary cameras preset on the mobile terminal. In the embodiment of the present invention, a ...

Embodiment 2

[0070] refer to figure 2 , which shows a flow chart of steps of a method for shooting a high dynamic range image provided by an embodiment of the present invention. The method for shooting a high dynamic range image can be applied to a mobile terminal, and the mobile terminal includes a first camera, a second camera, and a second camera. Three cameras, the shooting method of the high dynamic range image may specifically include the following steps:

[0071] Step 201: Use the first camera to measure light in the shooting area, and determine the target normal exposure value.

[0072] In the embodiment of the present invention, the mobile terminal may be a mobile electronic device such as a mobile phone or a PAD (Portable Android Device, tablet computer).

[0073] The first camera can be a main camera preset on the mobile terminal, and the second camera and the third camera can be two auxiliary cameras preset on the mobile terminal. In the embodiment of the present invention, a...

Embodiment 3

[0191] refer to image 3 , shows a schematic structural diagram of a high dynamic range image capturing device provided by an embodiment of the present invention, the high dynamic range image capturing device includes a first camera, a second camera and a third camera, the high dynamic range image The shooting device may specifically include the following modules:

[0192] A target exposure value determination module 310, configured to use the first camera to measure light in the shooting area to determine a target normal exposure value;

[0193] The first exposure value acquisition module 320 is configured to determine a first underexposure exposure value and a first overexposure exposure value according to the target normal exposure value and the scene information of the shooting area;

[0194] The second underexposure value acquisition module 330 is configured to use the second camera to perform photometry on the over-dark area of ​​the shooting area to obtain a second und...

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Abstract

The invention provides a high dynamic range image shooting method and a high-dynamic-range image shooting device. The method comprises the following steps of: using a first camera for measuring lightof a shooting area to obtain a target normal exposure value, according to the target normal exposure value and the scene information of the shooting area, determining a first underexposure exposure value and a first overexposure exposure value, using a second camera to measure the light of the too dark area of the shooting area; obtaining a second under-exposure exposure value; using a third camera to measure the light of the over-bright area of the shooting area; obtaining a second overexposure exposure value, correcting the first overexposure exposure value based on the second overexposure exposure value to generate an overexposure correction value, correcting the first overexposure exposure value based on the second overexposure exposure value to generate an overexposure correction value, and shooting a shooting area according to the overexposure correction value, the target normal exposure value and the overexposure correction value to generate a high-dynamic-range image. Accordingto the invention, the obtained high-dynamic-range image is moderate in overall brightness and accurate in tone relation.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method and device for shooting high dynamic range images. Background technique [0002] With the widespread application of smart handheld devices, more and more users choose to use the handheld devices to take pictures. Due to the limitation of the dynamic range of the built-in camera sensor of the handheld device, most handheld devices will use HDR (High-Dynamic Range, high dynamic range image) imaging technology when taking pictures in high dynamic range scenes. This technology needs to shoot different exposure parameters The image sequence is finally fused into a high dynamic range image. The exposure parameters of image sequences with different exposure parameters play a crucial role in the dynamic range, overall brightness and tone relationship of the final fused image. [0003] However, most current HDR imaging technologies of handheld devices use fixed EV ...

Claims

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Application Information

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IPC IPC(8): H04N5/235
CPCH04N23/71H04N23/741
Inventor 杨威
Owner 艾酷软件技术(上海)有限公司
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