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Method and device for collecting image

An image acquisition device and image acquisition technology, applied in the field of information acquisition, can solve the problem that video equipment cannot provide stable video streams by upper-layer application modules

Inactive Publication Date: 2007-07-18
VIMICRO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method and device for image acquisition, which can solve the problem that video equipment cannot provide stable video streams to upper-layer application modules

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  • Method and device for collecting image
  • Method and device for collecting image

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Embodiment Construction

[0034] In order to make it easier for those skilled in the art to understand and realize the present invention, the embodiments of the present invention are described in conjunction with the accompanying drawings.

[0035] The invention provides an image acquisition method. During the image acquisition process, a data ready signal can be sent to the application module at the upper layer at regular intervals through the control of the timer, so that the application module at the upper layer can read image data from the acquisition buffer. As shown in FIG. 2 , the image acquisition method of the present invention will be described below with reference to FIG. 2 .

[0036] Step 1. Set the duration of the timer to a first predetermined value.

[0037] The first predetermined value can be set according to the properties of the video equipment, such as determined according to the captured image rate of the video equipment, or determined according to the frame rate required by the up...

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Abstract

This invention discloses a method and a device for collecting image, in which, said method includes: buffer-storing frame image data in a collection buffer region, a timer sends data-ready signals periodically to an upper applied module, which reads frame image data from the collection buffer region, said device includes: a collection buffer region for storing image data, a timer for triggering to send data-ready signals to the upper applied module, an upper applied module used in receiving image data from the buffer region.

Description

technical field [0001] The invention relates to an information collection technology, in particular to an image collection method and device. Background technique [0002] In information acquisition technology, image acquisition and processing operations are often involved. In the existing image acquisition system, the acquisition driver module of the video device continuously reads data from the ring buffer, and directly provides the read data to the upper layer application module to form a video stream of image data. As shown in Figure 1, in the prior art, the image acquisition device includes: a ring buffer for storing image frames provided by video equipment; an image decoding and transformation module for decoding and converting the image frames in the ring buffer Size conversion and other processing, and then directly send the processed image frame to the upper application module; the upper application module is used to receive the image frame processed by the image d...

Claims

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Application Information

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IPC IPC(8): H04N7/26G06T1/60G06F12/08
Inventor 周长志曹玉弟
Owner VIMICRO CORP