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Control method and control device

A control method and exposure control technology, applied in the field of image processing, can solve the problems of unfavorable shooting of moving objects, redundant information, and more noise, and achieve the effects of reducing source generation, reducing shooting time, and improving use efficiency

Inactive Publication Date: 2015-12-16
LENOVO (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned methods of synthesizing photos all need to use multiple photos to synthesize, and there are often phenomena such as redundant information or information loss.
[0003] In addition, in order to take care of the imaging of the dark part, the existing method of compositing photos will use a relatively high sensitivity (ISO) when the overall metering is relatively dark, which is wasteful for the highlight part and will generate a lot of noise
Another problem brought about by stitching more than two photos is that the user needs to wait for a long time, and it is easy to cause image blur due to user shaking hands, and it is not good for shooting moving objects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] figure 1It is a schematic diagram of the implementation flow of a control method provided by an embodiment of the present invention. The control method in this embodiment is applied to an electronic device, and the electronic device supports the camera function. In a preferred embodiment of the present invention, the control method It mainly includes the following steps:

[0067] Step 101: Collect light intensity information.

[0068] In this embodiment, the light intensity information may be collected by a sensor.

[0069] Step 102: Partition the photo preview image according to the light intensity information.

[0070] Preferably, said partitioning the photo preview image according to the light intensity information may include:

[0071] Divide light intensity information satisfying the same preset range into a type of light intensity area;

[0072] The photo preview image is divided into N regions corresponding to the light intensity regions; wherein, N is a posi...

Embodiment 2

[0106] figure 2 It is a schematic diagram of the implementation flow of another control method provided by the embodiment of the present invention. The control method in this embodiment is applied to an electronic device, and the electronic device supports the camera function. In a preferred embodiment of the present invention, the control The method mainly includes the following steps:

[0107] Step 201: Pre-setting upper and lower CMOS sensors and signal amplifiers for N regions; wherein, N is a positive integer.

[0108] Preferably, N=3.

[0109] That is to say, in order to save cost, block exposure control can be realized; specifically, the CMOS tubes used to control the shutter switching time of each area, and the CMOS tubes used to control each Area ISO signal amplifier.

[0110] Step 202: Collect light intensity information.

[0111] In this embodiment, the light intensity information may be collected by a sensor.

[0112] Step 203: Divide the photo preview image ...

Embodiment 3

[0142] image 3 It is a schematic diagram of the implementation flow of another control method provided by the embodiment of the present invention. The control method in this embodiment is applied to an electronic device, and the electronic device supports the camera function. In a preferred embodiment of the present invention, the control The method mainly includes the following steps:

[0143] Step 301: Pre-setting independent upper and lower CMOS sensors and independent signal amplifiers for each pixel.

[0144] That is to say, when the chip size and economic conditions permit, each pixel can be assigned a CMOS transistor for controlling the shutter switching time and a signal amplifier for controlling the ISO.

[0145] Step 302: Collect light intensity information.

[0146] In this embodiment, the light intensity information may be collected by a sensor.

[0147] Step 303: Partition the photo preview image according to the light intensity information.

[0148] Preferab...

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Abstract

The invention discloses a control method. The method comprises the following steps of: acquiring light intensity information; partitioning a photographing preview image according to the light intensity information; determining exposure parameters of the photographing preview image in each region according to a predetermined strategy; respectively performing exposure control on each region of the photographing preview image based on the exposure parameters of each region, and obtaining the image. The invention also discloses a control device. By the technical scheme of the invention, framing photographing time of a high dynamic range (HDR) image can be reduced, service efficiency of sensors is improved, source generation of noise is reduced, and user experience is improved.

Description

technical field [0001] The invention relates to image processing technology, in particular to a control method and device. Background technique [0002] At present, most electronic devices (such as mobile phones, tablet computers, etc.) are equipped with a camera function, and the brightness level range of the image sensor in the electronic device is generally 256-1024, which is often not enough for the actual brightness range in real life. The methods of synthesizing photos in the prior art mainly include the following types: using high dynamic range image (HighDynamicRange, HDR) technology, generally using 2 to 3 photos with different exposure parameters to synthesize; using real-time HDR technology, using interlaced scanning, adjacent The two lines use different exposure parameters to synthesize an HDR image in real time; using dual-lens technology, the two lenses use different exposure parameters to synthesize an HDR image. However, the above-mentioned methods of synthe...

Claims

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Application Information

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IPC IPC(8): H04N5/235
Inventor 柯海滨李众庆
Owner LENOVO (BEIJING) CO LTD
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