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Automatic red eye detection and correction method when photo taking

An automatic detection and red-eye technology, applied in color TV parts, TV system parts, image data processing, etc., can solve problems such as increased shooting delay and low efficiency, achieve convenient implementation, avoid repeated shooting, improve The effect of efficiency

Active Publication Date: 2008-11-19
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this method needs to take two photos of the same scene at the same time, which increases the shooting delay, and the repeated shooting also brings lower efficiency

Method used

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  • Automatic red eye detection and correction method when photo taking
  • Automatic red eye detection and correction method when photo taking
  • Automatic red eye detection and correction method when photo taking

Examples

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Embodiment Construction

[0021] The present invention detects and corrects red eyes based on preview image information and captured actual image information. The specific implementation process is as figure 1 As shown, the detailed description is as follows:

[0022] First, the moment T when the shutter is pressed is acquired, that is, any moment in the time period from the start of pressing the shutter to the start of exposure imaging.

[0023] Then, according to the obtained shutter pressing time T, the image closest to the shutter pressing time T in the preview image sequence S is obtained as the correction reference image P1, and stored in a temporary storage unit.

[0024] Then use the shooting unit to acquire the actual image taken with the flash as the corrected image P2, and store it in a temporary storage unit.

[0025] Then use the correction reference image P1 and the relevant information of the corrected image P2 stored in the temporary unit to detect the red eye area R redeye .

[002...

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PUM

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Abstract

The invention discloses a method which detects and rectifies the red-eye effect during the photography process; the method adopts the preview (Preview) function that the current digital camera is provided with; when the flash lamp is needed for taking photos, the image which is stored at the moment closest to the time when the shutter is pressed in the preview image sequence is read and stored; the image and various related information (such as the chromaticity information) of the shot image are used to detect the red-eye area; the detected red-eye area is rectified; the rectified image is used as the final image and stored in the memory of the shooting device; thereby, the red-eye is removed rapidly and accurately during the normal and single exposure-shooting process; the image data without the red-eye is obtained.

Description

technical field [0001] The invention relates to a digital image processing method, in particular to a method for automatically detecting and removing red eyes when taking pictures. Background technique [0002] Often the human eye appears red when a photo is taken with a flash in low light conditions, which is known as the "red-eye phenomenon". This is caused by the intense light emitted by the flash reflecting off the blood vessels on the retina inside the eyeball. Moreover, due to the miniaturization of digital cameras, the distance between the flashlight and the lens is getting smaller and smaller, and this problem is becoming more and more serious. [0003] Now there are many cameras with automatic red-eye reduction function, mainly divided into two kinds of technologies, one uses pre-flash to prevent red-eye, and another uses image processing to eliminate red-eye. [0004] Chinese Invention Patent Application Publication Specification CN 1100814A (announced on March 2...

Claims

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Application Information

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IPC IPC(8): H04N1/62H04N5/235G06T5/00
CPCG06T2207/30216G06T7/408H04N5/232H04N5/262G06T7/90H04N23/64
Inventor 王翼林福辉
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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