Method and device for controlling exposure time

A technology for exposure time and setting time, which is applied to color TV parts, TV system parts, TVs, etc., and can solve problems such as cumbersome operations

Active Publication Date: 2013-04-17
XIAOMI INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, regardless of whether the camera is a separate terminal or integrated in a smart mobile terminal, the selection of the above scene modes requires manual operation by the user, espec

Method used

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  • Method and device for controlling exposure time
  • Method and device for controlling exposure time
  • Method and device for controlling exposure time

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] figure 1 It is a flow chart of the exposure time control method provided in Embodiment 1 of the present invention, and the process includes:

[0114] Step 11: Detect the camera trigger event.

[0115] In this step, the photographing trigger event may be to trigger a physical button with a shutter function, or to click a soft button with a shutter function on the touch screen.

[0116] Step 12: If a camera trigger event is detected, detect the shaking level of the terminal.

[0117] Step 13: Determine the exposure time corresponding to the shake level according to the correspondence between the shake level and the exposure time; wherein, the lower the shake level is, the longer the corresponding exposure time is.

[0118] In this step, the jitter level reflects the user's jitter degree, and the higher the jitter level, the higher the reflected jitter degree.

[0119] The corresponding relationship between the shake level and the exposure time is pre-set. Different sha...

Embodiment 2

[0122] figure 2 It is a flow chart of the control method of the exposure time provided in Embodiment 2 of the present invention, and the process includes:

[0123] Step 21: Detect a camera trigger event.

[0124] In this step, the photographing trigger event may be to trigger a physical button with a shutter function, or to click a soft button with a shutter function on the touch screen.

[0125] Step 22: Detect changes in linear acceleration of the terminal within a set time.

[0126] Optionally, in this step, detecting the change of the linear acceleration of the terminal within the set time can be realized in the following manner: at each moment within the set time, respectively detect the linear acceleration components of the terminal in each set direction, and calculate each Set the absolute value of the difference between the linear acceleration component at this moment and the linear acceleration component at the previous moment, and add the absolute values ​​of each...

Embodiment 3

[0140] Figure 5 It is a flow chart of the control method of the exposure time provided by Embodiment 3 of the present invention, and the process includes:

[0141] Step 51: Detect a photo-taking trigger event.

[0142] In this step, the photographing trigger event may be to trigger a physical button with a shutter function, or to click a soft button with a shutter function on the touch screen.

[0143] Step 52: Detect changes in angular acceleration of the terminal within a set time.

[0144] Optionally, in this step, detecting the change of the angular acceleration of the terminal within the set time can be achieved by the following method: at each moment within the set time, respectively detect the angular acceleration components of the terminal in each set direction, and calculate each Set the absolute value of the difference between the angular acceleration component at this moment and the angular acceleration component at the previous moment, and add the absolute value...

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Abstract

The invention discloses a method and a device for controlling exposure time. The exposure time is determined through detection on the jitter grade of a terminal and further in combination of a corresponding relationship between the jitter degree and the exposure time; the lower the jitter is, the longer the exposure time is; in other words, when the jitter degree of the terminal is lower, the terminal automatically enters a mode of image quality priority; and through the prolonging of the exposure time for the decrease of light sensitivity, namely an sensitivity ( ISO) value, the quality of photos is improved.

Description

technical field [0001] The invention relates to the field of camera control, in particular to a method and device for controlling exposure time. Background technique [0002] There are some scene mode settings in the camera, such as night scene mode, seaside mode, snow scene mode, etc. When the user selects different scenes, the camera shutter has different exposure times, so that better quality photos can be obtained in different scenes. [0003] However, regardless of whether the camera is a separate terminal or integrated in a smart mobile terminal, the selection of the above scene modes requires manual operation by the user, especially when the camera is integrated in a smart mobile terminal, the user often needs to tap the touch screen several times to call out the scene mode The selected menu is very cumbersome to operate. Contents of the invention [0004] Embodiments of the present invention provide an exposure time control method and device, which can automatical...

Claims

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Application Information

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IPC IPC(8): H04N5/232H04N5/243
Inventor 朱凌刘霖秦秋平
Owner XIAOMI INC
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