Method and device for shooting a picture

Patent metadata

Field	Value
Publication number	US-9723218-B2
Application number	US-201514791678-A
Country	US
Kind code	B2
Filing date	Jul 6, 2015
Priority date	Dec 9, 2014
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

The present disclosure relates to a method and a device for shooting a picture, which belongs to a photography field. The method includes: obtaining a motion parameter of a mobile terminal; determining a current shooting parameter according to the motion parameter; shooting the picture according to the current shooting parameter. The present disclose solves the problem that there is obvious smear in a shot picture due to a movement of a mobile terminal and achieves the effects that the current shooting parameter is determined according to the motion parameter of the mobile terminal and that there is no smear or little smear in the shot picture.

First claim

What is claimed is:

1. A method for shooting a picture, comprising:
obtaining, by a mobile terminal including a processor and a motion sensor, a motion parameter of the mobile terminal from the motion sensor and an actual photosensibility;
determining, by the mobile terminal, a current shooting parameter according to the motion parameter and the actual photosensibility; and
shooting, by the mobile terminal, the picture according to the current shooting parameter;
wherein determining the current shooting parameter according to the motion parameter and the actual photosensibility comprises:
calculating a first shooting parameter according to the motion parameter;
calculating a second shooting parameter according to a shooting environment parameter, wherein the shooting environment parameter is a parameter at least partially indicating an environment of the mobile terminal; and
determining the current shooting parameter according to the first shooting parameter and the second shooting parameter,
wherein the first shooting parameter comprises a first exposure time T1, the second shooting parameter comprises a second exposure time T2 and the actual photosensibility; and
wherein determining the current shooting parameter according to the first shooting parameter and the second shooting parameter comprises:
setting the second exposure time T2 as a current exposure time and setting the actual photosensibility as a current photosensibility when the first exposure time T1 is greater than or equal to the second exposure time T2; and
setting the first exposure time T1 as the current exposure time and setting a sum of the actual photosensibility and a compensation photosensibility as the current photosensibility when the first exposure time T1 is less than the second exposure time T2.

2. The method according to claim 1 , further comprising:
detecting whether the sum of the actual photosensibility and the compensation photosensibility is greater than a maximum photosensibility of the mobile terminal;
setting the maximum photosensibility as the current photosensibility if the sum of the actual photosensibility and the compensation photosensibility is greater than the maximum photosensibility of the mobile terminal; and
setting the sum of the actual photosensibility and the compensation photosensibility as the current photosensibility if the sum of the actual photosensibility and the compensation photosensibility is less than the maximum photosensibility of the mobile terminal.

3. The method according to claim 1 , wherein calculating the first shooting parameter according to the motion parameter comprises:
querying the first shooting parameter corresponding to the motion parameter in a first correspondence relationship, wherein the first correspondence relationship comprises at least one group of motion parameters and the first shooting parameter corresponding to each group of motion parameters.

4. The method according to claim 1 , wherein calculating the second shooting parameter according to the shooting environment parameter comprises:
querying the second shooting parameter corresponding to the shooting environment parameter in a second correspondence relationship, wherein the second correspondence relationship comprises at least one group of shooting environment parameters and the second shooting parameter corresponding to each group of the shooting environment parameters.

5. A device for shooting a picture, comprising:
a processor and at least one sensor;
a memory configured to store instructions executable by the processor;
wherein the processor is configured to:
obtain a motion parameter of a mobile terminal from the at least one sensor and an actual photosensibility;
determine a current shooting parameter according to the motion parameter and the actual photosensibility;

and
shoot the picture according to the current shooting parameter;

wherein the processor is further configured to:
calculate a first shooting parameter according to the motion parameter;
calculate a second shooting parameter according to a shooting environment parameter, wherein the shooting environment parameter is a parameter of an environment of the mobile terminal; and
determine the current shooting parameter according to the first shooting parameter and the second shooting parameter,
wherein the first shooting parameter comprises a first exposure time T1, the second shooting parameter comprises a second exposure time T2 and the actual photosensibility, and the processor is further configured to:
set the second exposure time T2 as a current exposure time and set the actual photosensibility as a current photosensibility, if the first exposure time T1 is greater than or equal to the second exposure time T2; and
set the first exposure time T1 as the current exposure time and set a sum of the actual photosensibility and a compensation photosensibility as the current photosensibility, if the first exposure time T1 is less than the second exposure time T2.

6. The device according to claim 5 , wherein the processor is further configured to:
detect whether the sum of the actual photosensibility and the compensation photosensibility is greater than a maximum photosensibility of the mobile terminal;
set the maximum photosensibility as the current photosensibility, if the sum of the actual photosensibility and the compensation photosensibility is greater than the maximum photosensibility of the mobile terminal; and
set the sum of the actual photosensibility and the compensation photosensibility as the current photosensibility, if the sum of the actual photosensibility and the compensation photosensibility is less than the maximum photosensibility of the mobile terminal.

7. The device according to claim 5 , wherein the processor is further configured to:
query the first shooting parameter corresponding to the motion parameter in a first correspondence relationship, wherein the first correspondence relationship comprises at least one group of motion parameters and the first shooting parameter corresponding to each group of the motion parameters.

8. The device according to claim 5 , wherein the processor is further configured to:
query the second shooting parameter corresponding to the shooting environment parameter in a second correspondence relationship, wherein the second correspondence relationship comprises at least one group of shooting environment parameters and the second shooting parameter corresponding to each group of the shooting environment parameters.

9. A device for shooting a picture, comprising one or more circuitries configured to:
obtain a motion parameter of a mobile terminal and an actual photosensibility;
determine a current shooting parameter according to the motion parameter and the actual photosensibility; and
shoot the picture according to the current shooting parameter;

where in the one or more circuitries are further configured to:
calculate a first shooting parameter according to the motion parameter;
calculate a second shooting parameter according to a shooting environment parameter, wherein the shooting environment parameter is a parameter of an environment of the mobile terminal; and
determine the current shooting parameter according to the first shooting parameter and the second shooting parameter,
wherein the first shooting parameter comprises a first exposure time T1, the second shooting parameter comprises a second exposure time T2 and the actual photosensibility, and the one or more circuitries are further configured to:
set the second exposure time T2 as a current exposure time and set the actual photosensibility as a current photosensibility, if the first exposure time

Assignees

• Xiaomi Inc

Inventors

• Feng Jingmin
• Ge Qi
• Liu Lin

Classifications

• H04N23/681 Primary

  Motion detection · CPC title

• H04N23/73 Primary

  by influencing the exposure time · CPC title

• H04N5/23251

  Electricity · mapped topic

• H04N5/2353 Primary

  Electricity · mapped topic