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Image processing device, image processing method, and program

An image processing device and image data technology, applied in image data processing, image enhancement, image communication, etc., can solve problems such as inability to correctly detect defective blocks, inability to accurately calculate difference values, etc.

Active Publication Date: 2018-09-04
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in the above-mentioned Patent Document 1, there is a problem that since the surrounding pixels of the pixel of interest are referred to, when the defective block is adjacent, the edge portion of the subject is captured adjacent to the defective block. When a defective pixel is generated around a defective block, etc., the difference between the pixel value of the pixel of interest and the pixel value of the surrounding pixels cannot be accurately obtained, and the defective block cannot be detected correctly.

Method used

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  • Image processing device, image processing method, and program
  • Image processing device, image processing method, and program
  • Image processing device, image processing method, and program

Examples

Experimental program
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Embodiment approach 1

[0051] 〔Structure of the camera system〕

[0052] figure 1 It is a block diagram schematically showing the configuration of the imaging system according to Embodiment 1 of the present invention. figure 1 The camera system 1 shown has a camera device 10 , an image processing device 20 , and a display device 30 .

[0053] [Structure of camera device]

[0054] First, the configuration of the imaging device 10 will be described. Such as figure 1 As shown, the imaging device 10 has an optical system 101, an aperture 102, a shutter 103, a driver 104, an imaging element 105, an analog processing unit 106, an A / D conversion unit 107, an operation unit 108, a memory interface unit 109, a recording medium 110, an A volatile memory 111, a nonvolatile memory 112, a bus 113, an imaging control unit 114, and a first external interface unit 115.

[0055] The optical system 101 is configured using a plurality of lenses. The optical system 101 is configured using, for example, a focus len...

Embodiment approach 2

[0120] Next, Embodiment 2 of the present invention will be described. This second embodiment has the same configuration as the imaging system 1 of the above-mentioned first embodiment, but the offset calculation process is different. Next, the offset calculation processing performed by the offset calculation unit according to Embodiment 2 will be described. In addition, the same code|symbol is attached|subjected to the same structure as the imaging system 1 of Embodiment 1 mentioned above, and description is abbreviate|omitted.

[0121] [Outline of offset calculation processing]

[0122] Figure 8 It is a flowchart showing the outline of the offset calculation process according to the second embodiment. In addition, in Embodiment 2, the offset calculation unit 222 and the offset calculation unit 231 respectively perform the same processing, so only the offset calculation processing when the offset calculation unit 222 executes it will be described.

[0123] Such as Figure ...

Embodiment approach 3

[0130] Next, Embodiment 3 of the present invention will be described. The imaging system of Embodiment 3 has the same configuration as the imaging system 1 of Embodiment 1 described above, but the offset calculation process is different. Next, the offset calculation processing performed by the offset calculation unit according to Embodiment 3 will be described. In addition, the same code|symbol is attached|subjected to the same structure as the imaging system 1 of Embodiment 1 mentioned above, and description is abbreviate|omitted.

[0131] [Outline of offset calculation processing]

[0132] Figure 10 It is a flowchart showing the outline of the offset calculation process in the third embodiment. In addition, in Embodiment 3, the offset calculation unit 222 and the offset calculation unit 231 respectively perform the same processing, so only the offset calculation processing when the offset calculation unit 222 executes it will be described.

[0133] Such as Figure 10 A...

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Abstract

Provided are an image processing device, an image processing method, and a program that enable highly accurate detection and correction of a defective block. An image processing device 20 is providedwith: a defective block detection unit 22 which, on the basis of image data, detects an offset component of a pixel value generated in a shared block comprising a plurality of pixels sharing a readoutcircuit, by using the pixel value of a pixel within the shared block and the pixel value of a pixel outside the shared block; and a defective block correction unit 23 which, on the basis of the offset component detected by the defective block detection unit 22, calculates a correction amount for correcting the pixel value of at least one pixel within the shared block, and which corrects the pixelvalue of the at least one pixel within the shared block by using the correction amount.

Description

technical field [0001] The present invention relates to an image processing device, an image processing method, and a program for detecting and correcting noise caused by a readout circuit of an imaging element having a plurality of pixels arranged two-dimensionally. Background technique [0002] In recent years, in imaging devices such as CMOS (Complementary Metal Oxide Semiconductor: Complementary Metal Oxide Semiconductor), the miniaturization of pixels and readout circuits that read out signals from the pixels has progressed. In such miniaturization, a decrease in sensitivity and an increase in various noises become problems. To reduce the sensitivity, a shared pixel structure is adopted in which multiple pixels are shared in one readout circuit and read out signals as a shared block, reducing the area of ​​the readout circuit and increasing the aperture ratio (ratio of the light receiving part) of each pixel. ), thereby increasing the sensitivity. [0003] On the othe...

Claims

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Application Information

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IPC IPC(8): H04N5/367H04N5/232H04N5/3745H04N9/07
CPCH04N5/772H01L27/14636H01L27/14643H04N25/63H04N25/683H04N25/778H04N25/68H04N25/77H04N23/65H04N25/67H04N25/75G06T5/20H04N5/142H04N5/937
Inventor 山崎辉彬市川学
Owner OLYMPUS CORP
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