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Focusing method based on shooting scene and image pickup equipment

A technology for shooting scenes and focusing methods, which is applied in the field of photography and can solve problems such as virtual focus and dead focus

Active Publication Date: 2016-04-06
成都全景智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the shortcomings of the existing focusing methods, the present invention proposes a focusing method and camera equipment based on shooting scenes to solve the problem of virtual focus or dead focus in the prior art

Method used

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  • Focusing method based on shooting scene and image pickup equipment
  • Focusing method based on shooting scene and image pickup equipment
  • Focusing method based on shooting scene and image pickup equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] The schematic flow chart of the focusing method based on the low-illuminance scene in Embodiment 1 of the present invention is as follows figure 1 shown, including the following steps:

[0110] S101: The imaging device determines a sensitivity gain value when acquiring the image data for the acquired image data.

[0111] Specifically, the imaging device converts the optical signal into an analog electrical signal through its photosensitive device, such as a CCD (Charge Coupled Device, Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor, Complementary Metal Oxide Semiconductor) device, etc.; After analog-to-digital conversion, digitized image data, such as data in a RAW format file, is obtained. Image data includes data of a plurality of pixels.

[0112] The imaging device can determine the sensitivity ISO when the image data is acquired, and then determine the gain value for gaining the sensitivity. Preferably, the camera device can use AGC (Aut...

Embodiment 2

[0140] A schematic flow chart of the focusing method based on a simple scene in Embodiment 2 of the present invention is as follows figure 2 shown, including the following steps:

[0141] S201: For the acquired image data, the imaging device determines the number of feature components whose frequency is higher than a specified frequency among the focus feature values ​​of the image data.

[0142] Specifically, the imaging device converts the image data into the frequency domain to obtain a plurality of frequency feature components of each pixel of the image data; according to a preset high-pass filter, the frequency feature components of each pixel are extracted from the frequency feature components of each pixel. a plurality of high-frequency characteristic components; according to the plurality of high-frequency characteristic components of each pixel, the focus characteristic value of the image data is determined.

[0143] Preferably, the imaging device determines a focus...

Embodiment 3

[0162] The flowchart of the focusing method based on the point light source scene provided by Embodiment 3 of the present invention is as follows: image 3 shown, including the following steps:

[0163] S301: The imaging device determines a focus characteristic value of the acquired image data.

[0164] Specifically, the imaging device converts the acquired image data into the frequency domain to obtain a plurality of frequency characteristic components of each pixel of the image data; according to a preset high-pass filter, from each frequency characteristic component of each pixel of the image data A plurality of high-frequency characteristic components of each pixel is extracted; and a focus characteristic value of the image data is determined according to the plurality of high-frequency characteristic components of each pixel.

[0165] Preferably, the imaging device determines a focus feature value of the image data, such as focus_value, according to the high-frequency fe...

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PUM

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Abstract

The embodiment of the invention provides a focusing method based on a shooting scene and image pickup equipment. The method comprises the following steps: determining a feature value of acquired image data and / or a shooting parameter during acquisition of the image data; determining a shooting scene matched with the feature value of the image data and / or the shooting parameter from a plurality of preset shooting scenes; determining a preset focusing mode corresponding to the matched shooting scene; and performing focusing according to the determined focusing mode for shooting. In the embodiment of the invention, focusing in the preset focusing mode corresponding to the shooting scene is more suitable for the shooting scene than focusing in one focusing mode. Through adoption of the focusing method, focusing becomes more efficient and smooth; the phenomenon of virtual focus or dead focus can be avoided; the imaging definition is increased; and the user experience can be improved.

Description

technical field [0001] The present invention relates to the technical field of photographing, and in particular, the present invention relates to a focusing method and photographing equipment based on photographing scenes. Background technique [0002] With the development of science and technology and the progress of society, intelligent terminals such as smart phones and tablet computers with calling functions have been widely popularized; smart cameras have also begun to be popularized. [0003] Smart cameras are usually installed in users' homes or offices for security monitoring. The data acquisition and transmission method of the smart camera usually includes: shooting a place near the smart camera to obtain video data or photo data; uploading the video data or photo data to the cloud server through the network, and the cloud server will receive the video data Or the photo data is forwarded to the smart terminal. Users can monitor the situation of the place where the...

Claims

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Application Information

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IPC IPC(8): H04N5/232
CPCH04N23/67
Inventor 林铁楠
Owner 成都全景智能科技有限公司
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