Mobile phone camera shooting method and apparatus

A mobile phone and camera technology, which is applied in the field of mobile phone camera operation methods and devices, can solve the problems of gaining image noise, no technical means, and affecting shooting quality, and achieve the effects of improving preview rate, simple implementation, and ensuring shooting quality

Active Publication Date: 2009-08-19
VIMICRO ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the increase of gain will cause noise in the image and affect the shooting quality
[0005] At present, there is no effective technical means in the existing technology, which can improve the preview rate of the mobile phone camera system without causing a decrease in the shooting quality

Method used

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  • Mobile phone camera shooting method and apparatus
  • Mobile phone camera shooting method and apparatus
  • Mobile phone camera shooting method and apparatus

Examples

Experimental program
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Embodiment Construction

[0049] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0050] The invention is suitable for the mobile phone camera system in which the multimedia chip has the ISP function and can handle automatic exposure.

[0051] The mobile phone camera method of the present invention specifically includes the following steps:

[0052] 1. When entering the preview, set the exposure time and gain during the preview. The exposure time and gain settings should meet the requirements for the preview rate and brightness that satisfy the user; usually, in order to increase the preview rate and ensure the brightness, this When the gain is higher than the gain used in the preview in the prior art, the exposure time is shorter;

[0053] 2. Perform image preview according to the exposure time and gain set in step 1;

[0054] 3. After the preview is over and before the actual shooting, set the exposure time and gain during actual...

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PUM

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Abstract

The invention discloses a cellphone photoing method and a device thereof which are used for improving previewing speed of a cellphone photoing system and not reducing photoing quality and applied to the cellphone photoing system with a media chip provided with ISP functions. The main proposals thereof comprise: a preview parameter setting step which is used for setting time of exposure when previewing and gain; a preview step which is used for image previewing according to the preview time of exposure and the gain; actual photoing parameter setting step which is used for setting the time of exposure and gain at the time of actual photoing after the ending of the preview and before the actual photoing; an actual photoing step which is used for photoing according to the actual photoing time of exposure and the gain set previously. The cellphone photoing method and a device thereof set alone the time of exposure and the gain to the preview, thus satisfying the requirement of preview speed and meanwhile providing a special solution method to the setting of actual photoing parameters after the ending of the preview and thus realizing rapid transition from the preview to the actual photoing.

Description

technical field [0001] The invention belongs to the technical field of mobile phone camera, and in particular relates to a method and device for operating a mobile phone camera. Background technique [0002] In the mobile phone camera system, due to the influence of many factors such as the actual frequency and light, the preview rate is often slow. At present, the pixels of mobile phone cameras are getting higher and higher. In addition to bringing high camera quality, high pixels are more likely to lead to a decrease in the preview frame rate. Mobile phone users usually hope that the preview image can reach a certain frame rate, which requires us to design a solution so that the preview frame rate can meet higher requirements. [0003] There are two main factors affecting the preview image frame rate: one is the working frequency of the sensor (camera), but the working frequency of the camera is fixed; the other is the current exposure time (et), the longer the exposure t...

Claims

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Application Information

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IPC IPC(8): H04N5/235H04N5/243
Inventor 何菊
Owner VIMICRO ELECTRONICS CORP
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