Shooting method and shooting system capable of realizing dynamic capturing of human faces based on mobile terminal

Patent metadata

Field	Value
Publication number	US-10498952-B2
Application number	US-201615570729-A
Country	US
Kind code	B2
Filing date	Oct 25, 2016
Priority date	Jan 21, 2016
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

The present invention discloses a method, a system, and a mobile terminal for dynamically capturing a face for video taking, which adjusts the positions of a face recognition camera and a main camera according to face position information collected by the face recognition camera during shooting, such that an image of a person is taken at a central area of the picture, and at the same time, collects an original image in a visual angle of the main camera. The present invention can realize dynamic capture of shooting object positions to promptly take a picture of a face.

First claim

The invention claimed is:

1. A mobile terminal camera-based method for dynamically capturing a face for video taking, comprising:
during shooting, using a first camera to collect face position information, and using a second camera to collect original images in a visual angle, wherein the first camera and the second camera comprise a camera module disposed on a body of a mobile terminal through a rotation mechanism presenting two central lines used as a lateral rotation axis and a vertical rotation axis of the camera module to make lateral and vertical position rotational adjustment about the lateral rotation axis and the vertical rotation axis through the rotation mechanism to expand a shooting range of the camera module in lateral and vertical directions and to expand ranges of lateral and vertical movement adjustments of a terminal preview interface;
according to the face position information collected by the first camera, adjusting a position of the first camera through the rotation mechanism such that pictures taken by the first camera place people in a central area of the pictures;
according to the adjusted position, the first camera and the second camera perform image collection processing on the original images in the visual angle.

2. The mobile terminal camera-based method for dynamically capturing a face for video taking according to claim 1 , wherein the collecting of the face position information includes recognizing a face position.

3. The mobile terminal camera-based method for dynamically capturing a face for video taking according to claim 1 , wherein the adjusting the position of the first camera through the rotation mechanism comprises:
according to the face position information collected by the first camera, calculating a position of a face in a current picture taken for preview;
according to the calculated position, further calculating deviation data with respect to placing people in the central area of the pictures;
according to the deviation data, generating a position adjustment command to perform position adjustment on the first camera;
according to the generated position adjustment command, adjusting the position of the first camera such that the pictures taken by the first camera place the people in the central area of the pictures.

4. The mobile terminal camera-based method for dynamically capturing a face for video taking according to claim 3 , wherein the generating the position adjustment command comprises:
according to the deviation data, generating at least one of a lateral position adjustment command and a vertical position adjustment command to perform the position adjustment on the first camera.

5. The mobile terminal camera-based method for dynamically capturing a face for video taking according to claim 4 , wherein the adjusting of the position of the first camera comprises:
when a lateral position adjustment command is generated, adjusting a lateral position of the first camera such that the pictures taken by the first camera place people in the central area of the pictures;
when a vertical position adjustment command is generated, adjusting a vertical position of the first camera such that the pictures taken by the first camera place people in the central area of the pictures.

6. The mobile terminal camera-based method for dynamically capturing a face for video taking according to claim 4 , wherein the adjusting the position of the first camera through the rotation mechanism comprises:
performing data processing on face feature data collected by the first camera, calculating an image range of a face image, and calculating a central point of the face image according to the image range;
calculating a relative position of the central point of the face image relative to a central point of the current picture, and obtaining a ΔX and a ΔY, wherein the ΔX represents a lateral position information of the central point of the face image relative to the central point of the current picture; and wherein the ΔY represents a vertical position;
information of the central point of the face image relative to the central point of the current picture;
according to the ΔX and the ΔY, generating the lateral position adjustment command and the vertical position adjustment command;
according to the generated lateral position adjustment command and the vertical position adjustment command, adjusting a position of the second camera such that the ΔX trends to 0 and the ΔY trends to 0.

7. The mobile terminal camera-based method for dynamically capturing a face for video taking according to claim 1 , wherein the first camera is a face recognition camera and the second camera is a main camera.

8. A mobile terminal camera-based system for dynamically capturing a face for video taking, comprising one or more modules configured to:
during shooting, use a face recognition camera to collect face position information, and use a main camera to collect original images in a visual angle, wherein the face recognition camera and the main camera comprise a camera module on a mobile terminal through a rotation mechanism presenting two central lines used as a lateral rotation axis and a vertical rotation axis of the camera module to make lateral and vertical position rotational adjustment about the lateral rotation axis and the vertical rotation axis through the rotation mechanism to expand a shooting range of the camera module in lateral and vertical directions and to expand ranges of lateral and vertical movement adjustments of a terminal preview interface;
according to the face position information collected by the face recognition camera, adjust a position of the face recognition camera such that pictures taken by the face recognition camera place people in a central area of the pictures; and
use the face recognition camera and the main camera to perform, according to the adjusted position, image collection processing on the original images in the visual angle.

9. The mobile terminal camera-based system for dynamically capturing a face for video taking according to claim 8 , wherein the collecting of the face position information includes recognizing a face position.

10. The mobile terminal camera-based system for dynamically capturing a face for video taking according to claim 8 , wherein the adjusting of the position of the face recognition camera comprises:
according to the face position information collected by the face recognition camera, calculate a position of a face in a current picture taken for preview;
according to the calculated position, further calculate deviation data with respect to placing people in the central area of the pictures;
according to the deviation data, generate a position adjustment command to perform position adjustment on the face recognition camera;
according to the generated position adjustment command, adjust the position of the face recognition camera such that the pictures taken by the face recognition camera always place people in the central area of the pictures.

11. The mobile terminal camera-based system for dynamically capturing a face for video taking according to claim 8 , wherein the generating the position adjustment command comprises:
according to the deviation data, generate at least one of a lateral position adjustment command and a vertical position adjustment command to perform the position adjustment on the face recognition camera.

12. The mobile terminal camera-based system for dynamically capturing a face for video taking according to claim 11 , wherein the adjusting of the position of the face recognition camera comprises:
when a lateral position adjustment command is generated, adjust a lateral posi

Assignees

• Huizhou Tcl Mobile Communication Co Ltd

Inventors

• Lv Jinfeng

Classifications

• G06V40/166 Primary

  using acquisition arrangements · CPC title

• H04N23/90

  Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums · CPC title

• H04N23/50

  Constructional details · CPC title

• H04N23/695

  Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects · CPC title

• H04N23/611 Primary

  where the recognised objects include parts of the human body · CPC title