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Preview frame picture generation method and device as well as mobile terminal

A mobile terminal and generation device technology, applied in the Internet field, can solve the problem of high CPU consumption and memory occupation, and achieve the effect of strong practicability

Active Publication Date: 2018-06-19
WUHAN DOUYU NETWORK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this processing flow exists only for scenes like cameras and camera and video applications that need to continuously generate frames, and some special scenes do not need to generate continuous frames, and the continuous generation of frames will consume a lot of CPU and memory. higher

Method used

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  • Preview frame picture generation method and device as well as mobile terminal
  • Preview frame picture generation method and device as well as mobile terminal
  • Preview frame picture generation method and device as well as mobile terminal

Examples

Experimental program
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Effect test

no. 1 example

[0027] Please refer to figure 2 , figure 2 A flow chart of the method for generating a preview frame picture provided by the first embodiment of the present invention is shown. The method for generating a preview frame picture includes the following steps:

[0028] Step S101, acquiring a first preview frame captured by a camera device.

[0029] In the embodiment of the present invention, the first preview frame picture may be the preview frame picture collected after the user turns on the camera device 105 for the first time, or it may be the preview frame picture captured by the user during the start of the camera device 105 within the camera delay time (Camera Responsing Delay, CRD). Open the camera to preview any frame captured by the camera.

[0030]CRD is the response delay generated by operating the camera 105 , for example, turning on, turning off, turning on preview, turning off preview, flash switch, and the like. CRD is an unstable parameter of the camera 105 ,...

no. 2 example

[0061] Please refer to Figure 5 , Figure 5 A schematic block diagram of the device 200 for generating preview frame images provided by the second embodiment of the present invention is shown. The device 200 for generating preview frame images includes a first image acquisition module 201 , a model building module 202 , a delay time prediction module 203 and a second image acquisition module 204 .

[0062] The first picture acquisition module 201 is configured to acquire a first preview frame picture captured by the camera device.

[0063] In the embodiment of the present invention, the first frame acquiring module 201 may be used to execute step S101.

[0064] The model establishing module 202 is configured to establish a delay time prediction model according to the performance parameter matrix of the mobile terminal.

[0065] In the embodiment of the present invention, the model building module 202 may be used to execute step S102.

[0066] In the embodiment of the pres...

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Abstract

The embodiment of the invention relates to the technical field of Internets, and provides a preview frame picture generation method and device as well as a mobile terminal. The mobile terminal comprises a photographic device. The method comprises the following steps: acquiring a first preview frame picture collected by the photographic device; forecasting delay time of the photographic device by using a pre-built delay time forecasting model according to current performance parameters of the mobile terminal; and within the delay time, acquiring a second preview frame picture collected by the photographic device, so as to acquire non-continuous preview frame pictures. According to the embodiment of the invention, after the first preview frame picture is acquired, the delay time of the photographic device is dynamically forecast according to the current performance parameters of the mobile terminal, so that the second preview frame picture is acquired within the delay time to realize generation of the non-continuous preview frame pictures. The method is high in practicability.

Description

technical field [0001] The present invention relates to the technical field of the Internet, in particular to a method, device and mobile terminal for generating a preview frame picture. Background technique [0002] In the process of calling the camera to collect data and generate pictures, the Android application will first obtain the Camera driver class, and then open the camera through the Camera driver class to start continuous preview (the time interval is 16.67ms). The camera preview essentially captures the color channel value of the scene to generate a byte data in YUV format. YUV is essentially a grayscale image. Then the camera application converts the YUV grayscale color data into RGB color data, and finally the camera application converts the RGB Convert to a Bitmap bitmap, thus forming a frame in the preview scene screen in the camera application. [0003] The above is the current mainstream method of camera applications when taking pictures of scenes and gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232H04M1/725H04M1/72454
CPCH04M1/72454H04N23/60
Inventor 尹成张文明陈少杰
Owner WUHAN DOUYU NETWORK TECH CO LTD