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Flicker correction method and device, and imaging device

一种校正方法、校正值的技术，应用在图像通信、电视、彩色电视的零部件等方向，能够解决亮度差等问题，达到精确校正闪烁的效果

Inactive Publication Date: 2006-11-01
SONY GRP CORP
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Problems solved by technology

In addition, there will periodically be brightness differences between frames on the image

Method used

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  • Flicker correction method and device, and imaging device
  • Flicker correction method and device, and imaging device
  • Flicker correction method and device, and imaging device

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Embodiment Construction

[0036] The present invention will be described in detail below in conjunction with embodiments and with reference to the accompanying drawings. It should be noted that the present invention is not limited to the embodiments described below, but may be modified in various ways, constructed alternatively, or implemented in various other forms without departing from the scope and spirit of the present invention.

[0037] The present invention is applicable to an image pickup device configured as shown in FIG. 10 . The image pickup device is indicated generally by reference numeral 100 .

[0038] The image pickup device 100 includes: a red image sensing device (imaging element) 10R, a green image sensing device (imaging element) 10G, and a blue image sensing device (imaging element) 10B for converting the The A-D converters 20R, 20G, and 20B that digitize the image signals SI_R, SI_G, and SI_B of the color images acquired by , 10G, and 10B, respectively, are supplied with the ima...

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Abstract

Even in case the shutter speed is high, a flicker can be corrected accurately. The present invention provides a flicker correction method in which a flicker is corrected by predicting, from a present input frame image, a flicker component in an image of a next frame and adding a correction value to the next frame image on the basis of the predicted flicker component, the method including the steps of holding a plurality of flicker data, calculating the correction value by combining a plurality of flicker data together at a ratio set correspondingly to a shutter speed and frame rate, and adding the calculated correction value to the input image signal.

Description

[0001] Cross References to Related Applications [0002] The present invention contains subject matter related to Japanese Patent Application JP 2005-121424 filed in the Japan Patent Office on Apr. 19, 2005, the entire content of which is hereby incorporated by reference. technical field [0003] The present invention relates to a flicker correction method and device and an image pickup device in which flicker is corrected by subtracting a flicker correction signal from an image signal. Background technique [0004] When a subject is imaged with a digital camera under the light of a light source, such as a fluorescent lamp, that is periodically turned on and off repeatedly, periodic light and dark streaks will appear in the acquired image of the subject, causing them to look Looks like it's moving in the image. In addition, there may periodically be differences in brightness between frames on the image. This is called "flickering". Flicker is a problem that inevitably occ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/243
CPCH04N9/64H04N23/745H04N23/70H04N23/73
Inventor 大野哲之中筋元宏西出义章池山裕政
Owner SONY GRP CORP
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