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Method, system and electronic device for detecting flash lamp

A technology of electronic equipment and detection method, which is applied to the parts of TV system, TV, optics, etc., can solve the problems of different brightness, can not guarantee the same distance between the flashlight of the mobile phone and the bottom of the dark box, poor consistency of the flashlight, etc., to achieve brightness compensation Differences, consistency assurance, and accurate test results

Inactive Publication Date: 2019-01-15
OPPO CHONGQING INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during detection, there is no guarantee that the distance between the flashlight of the mobile phone and the bottom of the camera obscura is exactly the same, which may result in different brightness of the gray card photos taken under the same brightness of the flashlight, resulting in poor consistency of flashlight detection

Method used

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  • Method, system and electronic device for detecting flash lamp
  • Method, system and electronic device for detecting flash lamp
  • Method, system and electronic device for detecting flash lamp

Examples

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example 1

[0035] Example 1: When the distance sensor is an infrared sensor, the infrared sensor can be controlled to emit an infrared signal, and the infrared signal will be reflected when it hits the bottom of the dark box. Then control the infrared sensor to receive the feedback signal returned from the bottom of the dark box. During this process, the intensity of the infrared signal will decrease due to reflection, etc., so the difference between the signal strength of the infrared signal and the signal strength of the feedback signal can be calculated, and the distance from the flash to the bottom of the dark box can be further calculated according to the difference.

example 2

[0036] Example 2: When the distance sensor is a laser sensor, the laser sensor can be controlled to emit a laser signal, and the emission time of the emitted laser signal can be recorded. When the laser signal hits the bottom of the dark box, it will be reflected. Then, the laser sensor can be controlled to receive the reflected signal returned from the bottom of the dark box, and record the receiving time of the reflected signal. Calculate the time difference between the emission time and the reception time, and further calculate the distance from the flash to the bottom of the dark box according to the time difference.

example 3

[0037] Example 3: When the distance sensor is a dual camera, use the dual camera to measure the distance from the flash to the bottom of the dark box based on the principle of binocular distance measurement. Specifically, such as image 3 As shown, the human eye is simulated by using dual cameras. Measure the angles θ1 and θ2 between the object to be photographed and the left / right camera (the first camera and the second camera), add a fixed y value (that is, the center distance between the two cameras), and then calculate the z value (that is, the distance from the subject to the camera). Since both the camera and the flash are set on the back of the electronic device, the z value is the distance from the flash to the bottom of the camera obscura.

[0038] Step 102, determine the driving current of the flashlight according to the distance.

[0039] In the case of the same flash brightness, the closer the subject is to the flash, the brighter the brightness will be, and the...

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Abstract

The invention provides a method, a system and an electronic device for detecting a flash lamp, wherein, the detection method of the flash lamp comprises the following steps: the distance between the flash lamp and the bottom of a dark box is measured by a distance sensor; Determining the driving current of the flash lamp according to the distance; Set the flash time when the flash is taken; Driving the flash lamp to flash according to the driving current and the flash time to obtain the photographed image brightness information; According to the image brightness information, whether the flashlamp conforms to the standard or not is detected. The detection method, system and electronic device of the flash lamp of the embodiment can effectively compensate the brightness difference caused bydifferent distances, ensure the consistency when detecting the flash lamp, and obtain more accurate detection results. The flash lamp detection method, system, and electronic device of the embodimentcan effectively compensate the brightness difference caused by different distances, and ensure the consistency when detecting the flash lamp.

Description

technical field [0001] The present invention relates to the technical field of mobile terminals, in particular to a detection method, system and electronic equipment of a flashlight. Background technique [0002] Currently, mobile phone flash detection is achieved by analyzing the brightness of a photo of the gray card at the bottom of the camera obscura taken with the flash turned on. That is, when the brightness of the gray card photo taken is within a certain range, the brightness of the flash meets the standard. However, during detection, it cannot be guaranteed that the distance between the flashlight of the mobile phone and the bottom of the camera obscura is exactly the same, which may result in different brightness of the gray card photos taken under the same flashlight brightness, resulting in poor consistency of flashlight detection. Contents of the invention [0003] The present invention aims to solve one of the technical problems in the related art at least t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00H04N5/235G03B43/00G03B15/03
CPCH04N17/002G03B15/03G03B43/00H04N23/74
Inventor 廖新风
Owner OPPO CHONGQING INTELLIGENT TECH CO LTD
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