An image acquisition terminal and image acquisition method

Abstract

The present invention provides an image acquisition terminal, which includes a first camera module, a second camera module, and a processing module. The first camera module and the second camera module are used to view the same scene at the same time. The contrast is detected and analyzed, and the focus point search range includes a first focus area and a second focus area that do not overlap with each other, and the processing module is used to control the first camera module to search for focus points in the first focus area, At the same time, control the second camera module to search for a focus point in the second focus area, and obtain focus point information of the first camera module or the second camera module, and use it to control the first camera module or the second camera module according to the focus point information. The camera module acquires images at the focus point. The present invention also provides an image acquisition method correspondingly. The invention can solve the problem of slow focus of the existing single-lens image acquisition module using high-resolution output images.

Description

technical field [0001] The present invention relates to the field of terminal shooting, and in particular to an image acquisition terminal and an image acquisition method capable of fast focusing. Background technique [0002] Auto Focus (Auto Focus) is to use the principle of object light reflection, the reflected light is accepted by the sensor (CCD) on the camera, processed by the computer, and the way to drive the electric focus device to focus is called auto focus. Contrast method for focusing is to achieve automatic focus by detecting the contour edge of the image. The sharper the edge of the outline of the image, the greater its brightness gradient, or the greater the contrast between the scene and the background at the edge. Conversely, for an out-of-focus image, the contour edge is blurred, and the brightness gradient or contrast decreases; the farther out of focus, the lower the contrast. [0003] In the existing single-camera focusing system, the automatic focus...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an image acquisition terminal and an image acquisition method to solve the problem of slow focusing speed in the prior art

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