Smart flashlight control method and mobile terminal

Patent metadata

Field	Value
Publication number	US-10495947-B2
Application number	US-201716314683-A
Country	US
Kind code	B2
Filing date	Jul 17, 2017
Priority date	Jul 22, 2016
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

A smart flashlight control method and a mobile terminal are provided. The method includes: when detecting that a photographing mode of a mobile terminal is turned on, detecting ambient light intensity of the mobile terminal; when the ambient light intensity of the mobile terminal is smaller than a first threshold, turning on a flashlight; detecting whether a target to be photographed by the mobile terminal includes a predetermined type; and when the target to be photographed includes the predetermined type, adjusting light intensity of a fill light in the mobile terminal, to achieve the best photographing effect.

First claim

What is claimed is:

1. A non-transitory computer-readable medium with one or more application programs stored thereon, that when executed by a camera application processor, cause the camera application processor to perform a method comprising:
when detecting that a photographing mode of a mobile terminal is turned on, detecting first ambient light intensity of the mobile terminal;
when the first ambient light intensity of the mobile terminal is smaller than a first threshold, turning on a flashlight before photographing, wherein the flashlight has light intensity such that a target to be photographed is allowed to adapt to increased ambient light intensity;
detecting whether the target to be photographed by the mobile terminal comprises a predetermined type of target;
when the target to be photographed comprises the predetermined type of target, adjusting light intensity of a fill light in the mobile terminal; and
photographing, by an image sensor, the target to be photographed with the flashlight and the fill light, wherein the flashlight is turned on and the fill light is light intensity adjusted.

2. The non-transitory computer-readable medium of claim 1 , wherein the step of, when the target to be photographed comprises the predetermined type of target, adjusting the light intensity of the fill light in the mobile terminal comprises:
when the target to be photographed is a human, adjusting the fill light to be lower than a second threshold, wherein the second threshold is smaller than a maximum adjustable value of the light intensity of the fill light.

3. The non-transitory computer-readable medium of claim 2 , wherein the second threshold is half of the maximum adjustable value of the light intensity of the fill light.

4. The non-transitory computer-readable medium of claim 1 , wherein after the step of detecting whether the target to be photographed by the mobile terminal comprises the predetermined type of target, the method further comprises:
when the target to be photographed is not a human, controlling the light intensity of the fill light to be adjusted within an intensity range of the fill light.

5. The non-transitory computer-readable medium of claim 1 , wherein after the step of detecting the first ambient light intensity of the mobile terminal, the method further comprises:
in a case that the flashlight is not turned on, when detecting that the first ambient light intensity of the mobile terminal is larger than a third threshold, not turning on the fill light, and the step of detecting whether the target to be photographed by the mobile terminal comprises the predetermined type of target and the step of, when the target to be photographed comprises the predetermined type of target, adjusting the light intensity of the fill light in the mobile terminal are not performed.

6. The non-transitory computer-readable medium of claim 5 , wherein the third threshold is larger than the first threshold, and the third threshold is equal to second ambient light intensity under which the mobile terminal achieves a predetermined photographing effect without turning on the flashlight.

7. A mobile terminal, comprising:
a flashlight and a fill light;
an image sensor;
a camera application processor;
a memory; and
one or more application programs stored in the memory, and configured to be executed by the camera application processor, to cause the camera application processor to implement:
a flashlight control module configured to, when detecting that a user turns on a photographing mode of a mobile terminal, determine whether the flashlight is to be turned on before photographing based on first ambient light intensity of the mobile terminal, and control the flashlight based on a determined result, wherein when the flashlight is determined to be turned on before photographing, the flashlight has light intensity such that a target to be photographed is allowed to adapt to increased ambient light intensity;
a fill light control module configured to detect a type of the target to be photographed, and adjust light intensity of a fill light based on whether the target to be photographed is a predetermined type of target; and
a photographing control module configured to photograph, by the image sensor, the target to be photographed with the flashlight and the fill light, wherein the flashlight is turned on and the fill light is light intensity adjusted.

8. The mobile terminal of claim 7 , wherein in the flashlight control module, when the first ambient light intensity of the mobile terminal is smaller than a first threshold, the flashlight is turned on, and when the first ambient light intensity of the mobile terminal is larger than the first threshold, the flashlight is not turned on.

9. The mobile terminal of claim 7 , wherein in the fill light control module, when the target to be photographed is the predetermined type of target, the light intensity of the fill light is adjusted to be lower than a second threshold, and when the target to be photographed is not the predetermined type of target, the light intensity of the fill light is controlled to be adjusted within an intensity range of the fill light.

10. The mobile terminal of claim 9 , wherein the second threshold is half of a maximum adjustable value of the light intensity of the fill light.

11. The mobile terminal of claim 7 , wherein in the fill light control module, in a case that the flashlight is not turned on, when the first ambient light intensity of the mobile terminal is larger than a third threshold, the fill light is not turned on the type of the target to be photographed is not detected, and the light intensity of the fill light is not adjusted based on whether the target to be photographed is the predetermined type of target.

12. The mobile terminal of claim 11 , wherein the third threshold is larger than the first threshold, and the third threshold is equal to second ambient light intensity under which the mobile terminal achieves a predetermined photographing effect without turning on the flashlight.

13. A mobile terminal, comprising:
a flashlight and a fill light;
an image sensor;
a camera application processor;
a memory; and
one or more application programs stored in the memory, and configured to be executed by the camera application processor, wherein the one or more application programs include operational instructions, so that the following steps are executed:
when detecting that a photographing mode of a mobile terminal is turned on, detecting first ambient light intensity of the mobile terminal;
when the first ambient light intensity of the mobile terminal is smaller than a first threshold, turning on a flashlight before photographing, wherein the flashlight has light intensity such that a target to be photographed is allowed to adapt to increased ambient light intensity;
detecting whether the target to be photographed by the mobile terminal comprises a predetermined type of target;
when the target to be photographed comprises the predetermined type of target, adjusting light intensity of a fill light in the mobile terminal; and
photographing, by the image sensor, the target to be photographed with the flashlight and the fill light, wherein the flashlight is turned on and the fill light is light intensity adjusted.

14. The mobile terminal of claim 13 , wherein the step of, when the target to be photographed comprises the predetermined type of target, adjusting the light intensity of the fill light in the mobile terminal comprises:
when the target to be photographed is a human, adjusting the fill light to be lower than a second threshold, where

Assignees

• Jrd Communication Inc

Inventors

• Li Chao
• Liu Shuguang
• Ouyang Huizi
• Zeng Huiyi
• Zhao Deming

Classifications

• H04N23/74

  by influencing the scene brightness using illuminating means · CPC title

• H04N23/56

  provided with illuminating means · CPC title

• H04N23/70

  Circuitry for compensating brightness variation in the scene · CPC title

• H04N23/71

  Circuitry for evaluating the brightness variation · CPC title

• H04N23/60

  Control of cameras or camera modules · CPC title