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公开(公告)号：US11503982B2
公开(公告)日：2022-11-22
申请号：US16987698
申请日：2020-08-07
Applicant: OLYMPUS CORPORATION
Inventor： Teruaki Yamasaki , Hiroki Maruyama
Abstract: An image processing apparatus includes a processor including hardware. The processor is configured to: calculate a motion evaluation value on a motion of a subject in a determination target frame; acquire a difference evaluation value of the determination target frame; determine whether to perform defective pixel detection on an image of the determination target frame by using the motion evaluation value and the difference evaluation value; and when it is determined that the defective pixel detection is to be performed, detect a defective pixel by determining whether a pixel of interest that is a determination target is a defective pixel with respect to the image of the determination target frame, based on a pixel value of the pixel of interest and pixel values of neighboring pixels that are located in a vicinity of the pixel of interest.
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2.发明授权公开(公告)号：US10158811B2
公开(公告)日：2018-12-18
申请号：US15632743
申请日：2017-06-26
Applicant: OLYMPUS CORPORATION
Inventor： Manabu Ichikawa , Hiroki Maruyama
IPC: G06K9/00 , H04N5/357 , H04N1/409 , H04N5/341 , H04N5/956 , H04N5/77 , H04N5/907 , H04N5/213 , H04N7/14
Abstract: Provided is an image processing apparatus for correcting blinking defect noise included in image data generated by an image sensor, the image sensor including pixels arranged two-dimensionally and read-out circuits configured to read out a pixel value. The image processing apparatus is configured to: acquire noise information that associates the pixel value with positional information of the read-out circuits or positional information of each of the pixels, and with feature data related to blinking defect noise attributed to the read-out circuits; determine whether the blinking defect noise occurs on a pixel of interest based on the noise information; calculate candidate values indicating a correction amount for correcting the blinking defect noise based on the noise information and a pixel value of the pixel of interest if the blinking defect noise occurs; and correct the pixel value of the pixel of interest based on the candidate values.
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公开(公告)号：US10791289B2
公开(公告)日：2020-09-29
申请号：US16249239
申请日：2019-01-16
Applicant: OLYMPUS CORPORATION
Inventor： Hiroki Maruyama , Manabu Ichikawa , Teruaki Yamasaki
IPC: H04N5/367
Abstract: An image processing apparatus processes noise from a defective pixel in image data generated by an image sensor including plural pixels, and plural read-out circuits that read out the signal. The apparatus includes an acquisition unit that obtains the image data and position information of the defective pixel; a defective pixel correction unit that corrects the signal from the defective pixel included in the image data, based on the position information; a low saturation pixel correction unit that corrects a signal from a low saturation pixel included in the image data where the signal from the defective pixel has been corrected, the low saturation pixel having a saturation level lower than the other pixels, based on a preliminarily calculated saturation level of the plural pixels; and a saturation level calculation unit that calculates the saturation level of the defective pixel corrected by the defective pixel correction unit.
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4.发明授权公开(公告)号：US10425602B2
公开(公告)日：2019-09-24
申请号：US15841825
申请日：2017-12-14
Applicant: OLYMPUS CORPORATION
Inventor： Hiroki Maruyama , Manabu Ichikawa
Abstract: An image processing apparatus includes: an acquisition unit configured to acquire defective pixel information including one of positional information on a reading circuit in which defective pixel noise occurs and positional information on each of pixels, blinking defect noise information including one of positional information on a reading circuit in which blinking defect noise occurs and the positional information on each of the pixels, and image data generated by an image sensor; and a noise reduction unit configured to reduce one of the defective pixel noise and the blinking defect noise based on the defective pixel information acquired by the acquisition unit and the blinking defect noise information acquired by the acquisition unit, with respect to the image data acquired by the acquisition unit.
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5.发明授权公开(公告)号：US10368017B2
公开(公告)日：2019-07-30
申请号：US15845166
申请日：2017-12-18
Applicant: OLYMPUS CORPORATION
Inventor： Hiroki Maruyama , Manabu Ichikawa
Abstract: An image processing apparatus includes: an acquisition unit configured to acquire image data and noise information including one of positional information on a reading circuit in which blinking defect noise caused by the reading circuit occurs and positional information on each of pixels; and a correction unit configured to set the image data acquired by the acquisition unit as correction target image data, and correct a pixel value of a pixel of interest of the correction target image data based on the noise information and reference image data that is based on image data acquired at a time different from the correction target image data.
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Patent Agency Ranking
公开(公告)号：US11228724B2
公开(公告)日：2022-01-18
申请号：US17079708
申请日：2020-10-26
Applicant: OLYMPUS CORPORATION
Inventor： Hiroki Maruyama , Teruaki Yamasaki
Abstract: An image processing apparatus including a processor including hardware, the processor being configured to: detect a defective pixel from among the multiple pixels; calculate a level of a pixel value of the defective pixel; compare the calculated level of the pixel value of the defective pixel with a threshold to determine whether a defective pixel that is stored in a storage is to be corrected, the threshold being determined based on a brightness that is calculated from pixel values close to a defective pixel and on any one of an exposure time of image data corresponding to a defective pixel on which a determination is to be made, a value of gain, and variation in pixel value among pixels surrounding the defective pixel on which a determination is to be made; and interpolate the pixel value of the determined defective pixel that is to be corrected.
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7.发明授权公开(公告)号：US10791288B2
公开(公告)日：2020-09-29
申请号：US15640668
申请日：2017-07-03
Applicant: OLYMPUS CORPORATION
Inventor： Manabu Ichikawa , Hiroki Maruyama
Abstract: An image processing apparatus includes: a pixel value group creation unit configured to create, for a plurality of pieces of image data generated by an image sensor including: a plurality of pixels arranged two-dimensionally to receive light from outside and generate a signal corresponding to an amount of the received light; and a plurality of read-out circuits shared by a predetermined number of pixels and configured to read out the signal as pixel values, a plurality of pixel value groups by classifying the pixel values for each of the plurality of read-out circuits; and a noise determination unit configured to determine whether blinking defect noise occurs in each of the plurality of pixel value groups, based on distribution of the pixel values of each of the plurality of pixel value groups created by the pixel value group creation unit.
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8.发明申请公开(公告)号：US20180234650A1
公开(公告)日：2018-08-16
申请号：US15948000
申请日：2018-04-09
Applicant: OLYMPUS CORPORATION
Inventor： Hiroki Maruyama , Manabu Ichikawa
Abstract: An image processing apparatus includes: an acquisition unit configured to obtain image data generated by an image sensor forming an array pattern using color filters having mutually different spectral transmittances and to obtain a correction coefficient for correcting a difference between pixel values corresponding to a difference between a spectral sensitivity and a preset reference spectral sensitivity in a wavelength range in a pixel-of-interest; a correction amount calculation unit configured to calculate an estimation value of a color component in the pixel-of-interest using a pixel value of each of pixels in surrounding pixels of a same color and the correction coefficient and configured to calculate a correction amount of the pixel value of the pixel-of-interest based on the estimation value and the correction coefficient of the pixel-of-interest; and a pixel value correction unit configured to correct the pixel value of the pixel-of-interest based on the calculated correction amount.
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公开(公告)号：US10791290B2
公开(公告)日：2020-09-29
申请号：US16247691
申请日：2019-01-15
Applicant: OLYMPUS CORPORATION
Inventor： Hiroki Maruyama , Manabu Ichikawa , Teruaki Yamasaki
Abstract: An image processing apparatus is disclosed which processes noise resulting from a defective pixel different from a low saturation pixel, included in image data generated by an image sensor including a plurality of pixels two-dimensionally arranged to receive light from outside and generate a signal according to an amount of received light and including a plurality of read-out circuits that read out the signal as a pixel value. The image processing apparatus includes an acquisition unit that obtains the image data generated by the image sensor and a saturation level of each of the plurality of pixels; and a noise processing unit that processes the noise on the basis of the saturation level obtained by the acquisition unit.
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10.发明授权公开(公告)号：US10419685B2
公开(公告)日：2019-09-17
申请号：US15698717
申请日：2017-09-08
Applicant: OLYMPUS CORPORATION
Inventor： Manabu Ichikawa , Hiroki Maruyama
IPC: H04N5/235 , H04N9/07 , H04N5/357 , H04N9/04 , G01J3/28 , H04N1/60 , H04N9/67 , H01L27/146 , H01L27/148
Abstract: An image processing apparatus includes a correction factor calculating unit configured to calculate a correction factor for correcting a difference in pixel values corresponding to a difference between a spectral sensitivity and a preset reference spectral sensitivity in a predetermined wavelength range at a pixel of interest, based on image data generated by an image sensor, the image sensor having a plurality of pixels on which color filters of a plurality of colors with different spectral transmittances are respectively disposed, the color filters forming a predetermined array pattern, the correction factor calculating unit being configured to calculate the correction factor for each of the plurality of pixels on which at least a predetermined color filter of the color filters is disposed.
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