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Image sensor detection device and method

An image sensor and image detection technology, which is applied in the direction of image communication, color TV parts, TV system parts, etc., can solve problems such as the impact of interpolation accuracy, and achieve the effect of improving image quality

Active Publication Date: 2014-12-17
SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the patent CN200810112796.4, multiple pixels around the bad pixel are used to interpolate the bad pixel, avoiding the influence of bad pixels directly adjacent to each other, but when there is a dense distribution of bad pixels in a certain area, Interpolation accuracy will still suffer

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  • Image sensor detection device and method
  • Image sensor detection device and method

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Embodiment Construction

[0017] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] Such as figure 1 as shown in figure 1 The device for detecting an image sensor involved in the present invention has a simple structure, low cost and is very easy to implement. The detection device includes, in order according to the propagation direction of the optical path: a light source 101 , an optical attenuator 102 , a first lens group 103 , a second lens group 104 , an aperture 105 and an image sensor 106 . The light emitted by the light source 1 passes through the optical attenuator 102 to generate suitable illumination intensity for detection. The optical attenuator 102 is a device for attenuating optical power. In this embodiment, an attenuating sheet with a simple structure is preferably used for schematic illustration. The light beam coming out of the attenuating sheet 102 is converted into parallel light through the fir...

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Abstract

The invention discloses an image sensor detection device sequentially comprising a light source, an optical attenuator, a first lens group, a second lens group, a diaphragm and an image sensor along an optical propagation direction. Exposure images of the image sensor under different light intensities are obtained by adjusting the transmissivity of the optical attenuator. The invention also discloses an image sensor detection method comprising the following steps of: obtaining the exposure images of the sensor under the different light intensities under the different light intensities; calibrating defective pixels of the sensor according to the obtained exposure images; calibrating bad cluster areas of the sensor according to the definition of bad clusters, and sequencing the bad cluster areas to find the area with a good measuring effect.

Description

technical field [0001] The invention relates to a detection device and a detection method for image equipment, in particular to a detection device and a detection method for an image sensor. Background technique [0002] The image sensor is an important part of a digital camera. According to different components, it can be divided into two categories: CCD (ChargeCoupled Device, charge-coupled device) and CMOS (Complementary Metal-Oxide Semiconductor, metal oxide semiconductor element). [0003] Limited by the manufacturing process, some defects, such as bad pixels (hereinafter referred to as bad pixels), are inevitable in the currently manufactured image sensors. Dead pixels generally mean that the dark current of the pixel is too large or its gain is significantly different from other pixels. The existence of dead pixels is one of the reasons for the degradation of image quality. In the prior art, for the above-mentioned defects, it is usually detected in advance. The co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N17/00H04N5/357
Inventor 葛亮王帆
Owner SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
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