WO2018124056A1 - Dispositif d'imagerie et procédé de commande associé - Google Patents

Dispositif d'imagerie et procédé de commande associé Download PDF

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WO2018124056A1
WO2018124056A1 PCT/JP2017/046600 JP2017046600W WO2018124056A1 WO 2018124056 A1 WO2018124056 A1 WO 2018124056A1 JP 2017046600 W JP2017046600 W JP 2017046600W WO 2018124056 A1 WO2018124056 A1 WO 2018124056A1
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Prior art keywords
light
image
shielded
correction
difference
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PCT/JP2017/046600
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English (en)
Japanese (ja)
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直人 末廣
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パナソニックＩｐマネジメント株式会社
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Publication of WO2018124056A1 publication Critical patent/WO2018124056A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
    • H04N25/63—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to dark current
    • H04N25/633—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to dark current by using optical black pixels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/70—SSIS architectures; Circuits associated therewith
    • H04N25/76—Addressed sensors, e.g. MOS or CMOS sensors

Definitions

  • the present disclosure relates to an imaging apparatus and a control method thereof.
  • Patent Document 1 A technique described in Patent Document 1 is known as an image sensor using an organic photoelectric conversion element.
  • the imaging apparatus processing for correcting a change in black level caused by dark current is performed. Specifically, the imaging device reduces the influence of dark current by subtracting a light-shielded image taken in a light-shielded state from the main image.
  • the dark current amount may change due to, for example, a change in temperature between when the main image is captured and when the light-shielded image is captured. In this case, the influence of dark current cannot be completely eliminated by the above correction.
  • an object of the present disclosure is to provide an imaging apparatus that can reduce the influence of the dark current amount or a control method thereof.
  • An imaging apparatus includes: an imaging element that can perform nondestructive reading; an imaging system that collects light on the imaging element; a light-blocking unit that blocks light from the imaging system; and the imaging element.
  • a correction unit that generates a corrected image by subtracting a correction image from the obtained main image, and the correction unit is obtained by the imaging device by one exposure in a light-shielding state, and each has a different exposure time.
  • a plurality of shaded images are acquired using nondestructive readout, and the correction image is generated using at least one of the plurality of shaded images.
  • the present disclosure can provide an imaging apparatus or a control method thereof that can reduce the influence of the dark current amount.
  • FIG. 1 is a block diagram of the imaging apparatus according to the first embodiment.
  • FIG. 2A is a diagram illustrating an appearance example of the imaging apparatus according to Embodiment 1.
  • FIG. 2B is a diagram illustrating an appearance example of the imaging apparatus according to Embodiment 1.
  • FIG. 3 is a diagram illustrating a configuration of the image sensor according to the first embodiment.
  • FIG. 4 is a circuit diagram illustrating a configuration of a pixel according to Embodiment 1.
  • FIG. 5 is a flowchart illustrating the operation of the imaging apparatus according to the first embodiment.
  • FIG. 6 is a diagram illustrating the operation of the imaging apparatus according to the first embodiment.
  • FIG. 7 is a diagram illustrating an example of the main image according to the first embodiment.
  • FIG. 1 is a block diagram of the imaging apparatus according to the first embodiment.
  • FIG. 2A is a diagram illustrating an appearance example of the imaging apparatus according to Embodiment 1.
  • FIG. 2B is a diagram illustrating an appearance example of
  • FIG. 8 is a diagram illustrating an example of a plurality of light-shielded images according to the first embodiment.
  • FIG. 9 is a diagram illustrating a calculation process of the corrected image according to the first embodiment.
  • FIG. 10 is a flowchart illustrating the operation of the imaging apparatus according to the second embodiment.
  • FIG. 11 is a diagram illustrating the operation of the imaging apparatus according to the second embodiment.
  • FIG. 12 is a flowchart illustrating the operation of the imaging apparatus according to the modification of the second embodiment.
  • FIG. 13 is a diagram illustrating the operation of the imaging apparatus according to the modification of the second embodiment.
  • FIG. 14 is a flowchart illustrating the operation of the imaging apparatus according to the third embodiment.
  • FIG. 15 is a diagram illustrating the operation of the imaging apparatus according to the third embodiment.
  • FIG. 16 is a flowchart illustrating the operation of the imaging apparatus according to the modification of the third embodiment.
  • FIG. 17 is a diagram illustrating the operation of the imaging apparatus according to the modification
  • FIG. 1 is a block diagram illustrating a configuration of an imaging apparatus 100 according to the present embodiment.
  • 2A and 2B are diagrams illustrating an example of the appearance of the imaging apparatus 100.
  • the imaging apparatus 100 is a camera such as a digital still camera or a digital video camera.
  • the imaging device 101 is a solid-state imaging device (solid-state imaging device) that converts incident light into an electrical signal (image) and outputs the obtained electrical signal.
  • the imaging device 101 is an organic sensor using an organic photoelectric conversion device.
  • the control unit 102 controls the image sensor 101.
  • the control unit 102 performs various signal processing on the image obtained by the imaging element 101, and displays the obtained image on the display unit 103 or stores it in the storage unit 104.
  • the image output from the control unit 102 may be output to the outside of the imaging apparatus 100 via an input / output interface (not shown).
  • control unit 102 includes a correction unit 105 that corrects an image obtained by the image sensor 101.
  • the imaging system 106 includes, for example, one or a plurality of lenses, and condenses light from the outside of the imaging apparatus 100 on the imaging element 101.
  • the light shielding unit 107 is, for example, a mechanical shutter, and shields light from the imaging system 106.
  • FIG. 3 is a block diagram illustrating a configuration of the image sensor 101.
  • 3 includes a plurality of pixels (unit pixel cells) 201 arranged in a matrix, a vertical scanning unit 202, a column signal processing unit 203, a horizontal readout unit 204, and a row.
  • Each of the plurality of pixels 201 outputs a signal corresponding to the incident light to the vertical signal line 207 provided in the corresponding column.
  • the vertical scanning unit 202 resets the plurality of pixels 201 via the plurality of reset control lines 205.
  • the vertical scanning unit 202 sequentially selects the plurality of pixels 201 in units of rows via the plurality of address control lines 206.
  • the column signal processing unit 203 performs signal processing on the signals output to the plurality of vertical signal lines 207, and outputs the plurality of signals obtained by the signal processing to the horizontal reading unit 204.
  • the column signal processing unit 203 performs noise suppression signal processing represented by correlated double sampling, analog / digital conversion processing, and the like.
  • the horizontal readout unit 204 sequentially outputs a plurality of signals after the signal processing by the plurality of column signal processing units 203 to the horizontal output terminal 208.
  • FIG. 4 is a circuit diagram illustrating a configuration of the pixel 201.
  • the pixel 201 includes a photoelectric conversion unit 211, a charge storage unit 212, a reset transistor 213, an amplification transistor 214 (source follower transistor), and a selection transistor 215.
  • the photoelectric conversion unit 211 generates signal charges by photoelectrically converting incident light. A voltage Voe is applied to one end of the photoelectric conversion unit 211.
  • the photoelectric conversion unit 211 includes a photoelectric conversion layer made of an organic material.
  • the photoelectric conversion layer may include a layer made of an organic material and a layer made of an inorganic material.
  • the charge storage unit 212 is connected to the photoelectric conversion unit 211 and stores the signal charge generated by the photoelectric conversion unit 211. Note that the charge storage unit 212 may be configured with a parasitic capacitance such as a wiring capacitance instead of a dedicated capacitance element.
  • the reset transistor 213 is used to reset the potential of the signal charge.
  • the gate of the reset transistor 213 is connected to the reset control line 205, the source is connected to the charge storage unit 212, and the reset voltage Vreset is applied to the drain.
  • drain and source generally depend on circuit operation, and are often not specified from the element structure.
  • one of the source and the drain is referred to as a source and the other of the source and the drain is referred to as a drain.
  • the drain may be replaced with the source and the source may be replaced with the drain.
  • the amplification transistor 214 amplifies the voltage of the charge storage unit 212 and outputs a signal corresponding to the voltage to the vertical signal line 207.
  • the gate of the amplification transistor 214 is connected to the charge storage unit 212, and the power supply voltage Vdd or the ground voltage Vss is applied to the drain.
  • the selection transistor 215 is connected in series with the amplification transistor 214, and switches whether to output the signal amplified by the amplification transistor 214 to the vertical signal line 207.
  • the selection transistor 215 has a gate connected to the address control line 206, a drain connected to the source of the amplification transistor 214, and a source connected to the vertical signal line 207.
  • the voltage Voe, the reset voltage Vreset, and the power supply voltage Vdd are voltages commonly used in all the pixels 201.
  • Non-destructive reading is a process of reading image data during an exposure period and continuing exposure.
  • conventional readout hereinafter referred to as destructive readout
  • nondestructive reading it is possible to read the image data exposed up to that time during the exposure period and continue the exposure. Thereby, a plurality of images having different exposure times can be obtained by one exposure.
  • the electronic ND control is a process for electrically controlling the transmittance of the image sensor.
  • the transmittance means the proportion of light that is converted into an electrical signal in the incident light. That is, by setting the transmittance to 0%, it is possible to electrically shield the light.
  • the transmittance is controlled by controlling the voltage Voe shown in FIG. Thereby, exposure can be electrically terminated without using a mechanical shutter.
  • the image sensor 101 includes a mechanical shutter and may use both electronic ND control and light shielding by the mechanical shutter, or may use light shielding by the mechanical shutter without using the electronic ND control.
  • the image sensor 101 is an organic sensor.
  • the image sensor 101 only needs to realize nondestructive reading or electronic ND control, and may be other than an organic sensor.
  • the photoelectric conversion layer included in the photoelectric conversion unit 211 may be made of an inorganic material.
  • the photoelectric conversion layer may be made of amorphous silicon or chalcopyrite semiconductor.
  • FIG. 5 is a flowchart showing an operation flow of the imaging apparatus 100.
  • FIG. 6 is a diagram for explaining the operation of the imaging apparatus 100. For example, this operation is used when a night sky or a night view is exposed for a long time.
  • the imaging device 100 first captures the main image 121 (S101). Specifically, as shown in FIG. 6, normal exposure is performed from time t1, and then the main image 121 is read by destructive reading.
  • the imaging apparatus 100 starts light-shielding exposure for generating the correction image 141 at time t2 (S102).
  • the light-shielding exposure is to perform exposure in a light-shielded state.
  • light shielding is performed by the above-described electronic ND control or a mechanical shutter.
  • the light-shielded image 131 photographed in such a light-shielded state shows a pixel value (luminance value) corresponding to the dark current amount.
  • the imaging apparatus 100 generates a plurality of light-shielded images 131 by performing non-destructive readout a predetermined number of times during the light-shielding exposure period (S103). Specifically, the imaging apparatus 100 repeatedly performs nondestructive reading at a predetermined cycle T4 after a predetermined time T3 has elapsed after the start of light-shielding exposure.
  • the exposure time T2 of the light-shielding exposure is predetermined and is longer than the main exposure time T1, for example.
  • FIG. 7 is a diagram illustrating an example of the main image 121.
  • FIG. 8 is a diagram illustrating an example of the plurality of light-shielded images 131.
  • the main image 121 includes an effective area 122 for outputting an electrical signal corresponding to incident light, and an OB (optical black) area (also referred to as a light shielding area) 123 that is always shielded. Including.
  • the light-shielded image 131 includes an effective area 132 and an OB area 133.
  • the luminance values indicating the dark current amount (black level) are different.
  • the imaging apparatus 100 converts, from the plurality of light-shielded images 131, the light-shielded image 131 in which the pixel value (luminance value) of the OB area 123 included in the main image 121 is close to the pixel value of the OB area 133, and the correction image 141. (S104). That is, the imaging apparatus 100 has a light-shielded image in which the difference between the pixel value of the light-shielded image 131 and the pixel value of the OB area 123 included in the main image 121 is less than a predetermined threshold among the plurality of light-shielded images 131. 131 is selected. For example, the imaging apparatus 100 selects the light-shielded image 131 having the smallest difference.
  • this difference is, for example, a difference between an average value of a plurality of pixel values in the OB area 123 and an average value of a plurality of pixel values in the OB area 133.
  • a maximum value, a minimum value, or a median value may be used instead of the average value.
  • the region used for comparison may be the entire OB region, a part of the OB region may be used, or a specific pixel included in the OB region may be used.
  • region used for a comparison is the same area
  • the imaging apparatus 100 generates a corrected image 142 by subtracting the correction image 141 from the main image 121 (S105). Specifically, the pixel value of the pixel at the same position in the correction image 141 is subtracted from the pixel value of each pixel of the main image 121. Thereby, the influence of the dark current at the time of long exposure is reduced.
  • the environment for example, temperature
  • the environment may change between the main exposure and the light-shielding exposure.
  • the detected dark current amount may be different.
  • the correction image 141 by selecting, as the correction image 141, a light-shielded image 131 having a pixel value in the OB area that is close to the light-shielded image 131 having different exposure times obtained by nondestructive readout. It is possible to suppress a difference in the amount of dark current between the main exposure and the light-shielding exposure.
  • FIG. 6 shows an example in which the non-destructive read cycle T4 is constant, it may not be constant.
  • the non-destructive readout interval at the time when the light shielding exposure time approaches the exposure time T1 of the main exposure may be shortened.
  • nondestructive reading is performed after a predetermined time has elapsed, but nondestructive reading may be performed periodically from the start of light-shielding exposure.
  • the imaging apparatus 100 includes the imaging element 101 capable of nondestructive reading, the imaging system 106 that collects light on the imaging element 101, and the light shielding that blocks the light of the imaging system 106. And a correction unit 105 that generates a corrected image 142 by subtracting the correction image 141 from the main image 121 obtained by the image sensor 101.
  • the correction unit 105 obtains a plurality of light-shielded images 131 obtained by the image sensor 101 by one exposure in a light-shielded state, each having a different exposure time by using nondestructive reading, and obtains at least one of the plurality of light-shielded images 131.
  • the correction image 141 is generated using the correction image 141.
  • the function of shielding the light of the imaging system 106 is not limited to a method using a mechanical shutter, and may be a method using another mechanism such as electronic ND control. That is, the light shielding unit that shields the light of the imaging system 106 is not limited to the light shielding unit 107 (mechanical shutter or the like) illustrated in FIG. 1, and may be a mechanism for performing electronic ND control or the like.
  • the correction unit 105 also includes a light-shielded image 131 in which the difference between the pixel value of the light-shielded image 131 and the pixel value of the light-shielded region (OB region 123) included in the main image 121 is less than a threshold value. From this, a correction image 141 is generated. As a result, the correction image 141 can be generated using the light-shielded image 131 that has a small difference in dark current amount from the main image 121, so that the difference in dark current amount between the main image 121 and the correction image 141 can be reduced.
  • the correction unit 105 calculates the pixel value of the light shielding area (OB area 133) of the light shielding image 131 and the pixel value of the light shielding area (OB area 123) included in the main image 121 among the plurality of light shielding images 131.
  • a correction image 141 is generated from the light-shielded image whose difference is less than the threshold. That is, pixel values in the same region are compared. Thereby, the light-shielding image 131 with a similar dark current amount can be selected with high accuracy.
  • the dark current amount of the light-shielded image 131 is dynamically determined, and the light-shielding exposure ends at the timing when the light-shielded image 131 having a dark current amount similar to the main image 121 is obtained. Thereby, compared with Embodiment 1, it can suppress that unnecessary nondestructive reading is performed.
  • FIG. 10 is a flowchart showing an operation flow of the imaging apparatus 100 according to the present embodiment.
  • FIG. 11 is a diagram for explaining this operation.
  • the imaging apparatus 100 captures the main image 121 as in the first embodiment, and starts light-shielding exposure at time t2 (S112).
  • the imaging apparatus 100 performs nondestructive readout during the light-shielding exposure period (S113).
  • the imaging apparatus 100 determines whether the pixel value of the OB area 133 of the light-shielded image 131 obtained by nondestructive reading is close to the pixel value of the OB area 123 of the main image 121 (S114). Specifically, the imaging apparatus 100 determines whether the difference between the pixel value of the OB area 133 of the light-shielded image 131 and the pixel value of the OB area 123 of the main image 121 is less than a predetermined threshold value.
  • the imaging apparatus 100 ends the light-shielding exposure (S115), and finally selects the light-shielded image 131 read by nondestructive readout as the correction image 141. (S116). For example, in the example illustrated in FIG. 11, at time t3, the difference is determined to be less than the threshold value, and the light-shielded image 131 is selected as the correction image 141.
  • the imaging apparatus 100 generates a corrected image 142 by subtracting the correction image 141 from the main image 121 (S117).
  • the correction unit 105 repeats nondestructive reading until the difference between the pixel value of the light-shielded image 131 and the pixel value of the OB area 123 included in the main image 121 is less than the threshold, and the difference is less than the threshold.
  • the shaded image 131 that has become is selected as the correction image 141.
  • FIG. 12 is a flowchart showing the operation of the imaging apparatus 100 in this case.
  • FIG. 13 is a diagram for explaining this operation.
  • the process shown in FIG. 12 includes step S116A instead of step S116 with respect to the process shown in FIG. That is, when the difference is less than the threshold (Yes in S114), the imaging apparatus 100 ends the light-shielding exposure (S115), and acquires the correction image 141 by destructive reading (S116A).
  • the difference is determined to be less than the threshold value.
  • the imaging apparatus 100 acquires the correction image 141 by destructive reading.
  • destructive readout is performed immediately after the determination, but may not be immediately after.
  • the correction unit 105 repeats nondestructive reading until the difference between the pixel value of the light-shielded image 131 and the pixel value of the OB area 123 included in the main image 121 is less than the threshold, and the difference is less than the threshold.
  • a light-shielded image is acquired from the image sensor 101 by destructive readout, and the light-shielded image acquired by the destructive readout is selected as the correction image 141.
  • Embodiment 3 In the present embodiment, modified examples of the first and second embodiments will be described.
  • Embodiments 1 and 2 the example in which one light-shielded image 131 obtained by nondestructive readout or destructive readout is used as it is as the correction image 141 has been described.
  • an example in which a correction image 141 is generated using a plurality of shaded images 131 will be described.
  • FIG. 14 is a flowchart showing the operation of the modification of the first embodiment.
  • the process shown in FIG. 14 includes step S104A instead of step S104 with respect to the process shown in FIG.
  • FIG. 15 is a diagram for explaining this operation.
  • step S ⁇ b> 104 ⁇ / b> A the imaging apparatus 100 uses a plurality of light-shielded images 131 obtained by nondestructive readout to have a plurality of light-shielded images 131 in which the pixel value of the OB area 123 included in the main image 121 is close to the pixel value of the OB area 133. Is used to generate the correction image 141 (S104A).
  • the imaging apparatus 100 includes a plurality of shaded images 131 in which a difference between a pixel value of the shaded image 131 and a pixel value of the OB area 123 included in the main image 121 is less than a predetermined threshold.
  • a correction image 141 is generated using the light-shielded image 131.
  • the correction unit 105 generates the correction image 141 by averaging the plurality of light shielding images 131 whose difference is less than the threshold among the plurality of light shielding images 131.
  • the method of reducing random noise using a plurality of images is not limited to the averaging.
  • the pixel value of a pixel in which random noise is generated is a value that is distant from the pixel value of a pixel at the same position in another plurality of images. Therefore, the imaging apparatus 100 determines whether or not random noise is generated in each pixel of each image based on the variation in the pixel value of each pixel between images, and a pixel in which random noise is not generated. May be combined to generate the correction image 141.
  • the imaging apparatus 100 may generate the correction image 141 by adding and averaging a plurality of light-shielded images 131 excluding pixels where random noise is generated.
  • the plurality of light-shielded images 131 may include images that have been read out in a destructive manner.
  • FIG. 16 is a flowchart showing the operation of the imaging apparatus 100 in this case.
  • FIG. 17 is a diagram for explaining this operation.
  • the process shown in FIG. 16 includes steps S116B and S116C instead of step S116A with respect to the process shown in FIG.
  • the imaging apparatus 100 ends the light-shielding exposure (S115), and after performing nondestructive reading continuously, performs destructive reading, thereby The shaded image 131 is acquired (S116B).
  • the imaging apparatus 100 generates the correction image 141 using the plurality of light-shielded images 131 obtained in step S116B.
  • the method for generating the correction image 141 is the same as that in step S104A, for example.
  • the non-destructive read interval T5 after the above difference is determined to be less than the threshold (after time t3) is shorter than the previous non-destructive read interval T4. That is, the correction unit 105 repeats nondestructive reading at the first interval T4 until the difference becomes less than the threshold, and when the difference becomes less than the threshold, the nondestructive reading is performed at the second interval T5 shorter than the first interval.
  • the correction image 141 may be generated by repeating the above and averaging the plurality of shaded images 131 acquired by destructive readout at the second interval T5.
  • the correction image 141 can be generated using a plurality of light-shielded images 131 with a small difference in dark current amount from the main image 121, so that the difference in dark current amount between the main image 121 and the correction image 141 can be reduced. .
  • An imaging apparatus 100 includes an imaging element 101 capable of nondestructive readout, an imaging system 106 that collects light on the imaging element 101, a light shielding unit 107 that shields light from the imaging system 106, A correction unit 105 that generates a post-correction image 142 by subtracting the correction image 141 from the main image 121 obtained by the image pickup device 101.
  • a plurality of shaded images 131 obtained with different exposure times are obtained using nondestructive readout, and a correction image 141 is generated using at least one of the plurality of shaded images 131.
  • the correction unit 105 corrects the correction image 141 from the light-shielded image 131 in which the difference between the pixel value of the light-shielded image 131 and the pixel value of the light-shielded area included in the main image 121 is less than the threshold among the plurality of light-shielded images 131. May be generated.
  • the correction image 141 can be generated using the light-shielded image 131 with a small difference in dark current amount from the main image 121, the difference in dark current amount between the main image 121 and the correction image 141 can be reduced.
  • the correction unit 105 may repeat non-destructive reading until the difference is less than the threshold, and may select the light-shielded image 131 in which the difference is less than the threshold as the correction image 141.
  • the correction unit 105 repeats nondestructive reading until the difference between the pixel value of the read light-shielding image 131 and the pixel value of the light-shielding area included in the main image 121 is less than the threshold, and the difference is less than the threshold.
  • the shaded image 131 may be acquired from the image sensor 101 by destructive readout, and the shaded image 131 obtained by destructive readout may be selected as the correction image 141.
  • the correction unit 105 may generate the correction image 141 by averaging the plurality of light shielding images 131 whose difference is less than the threshold among the plurality of light shielding images 131.
  • the correction unit 105 repeats nondestructive reading at a first interval until the difference becomes less than a threshold, and when the difference becomes less than the threshold, repeats nondestructive reading at a second interval shorter than the first interval.
  • the correction image 141 may be generated by averaging the plurality of light-shielded images 131 obtained by nondestructive reading at the second interval.
  • the correction image 141 can be generated using a plurality of light-shielded images 131 with a small difference in dark current amount from the main image 121, the difference in dark current amount between the main image 121 and the correction image 141 is reduced. Can be reduced.
  • the correction unit 105 corrects a light-shielded image 131 in which the difference between the pixel value of the light-shielded area of the light-shielded image 131 and the pixel value of the light-shielded area included in the main image 121 is less than the threshold among the plurality of light-shielded images 131.
  • a work image 141 may be generated.
  • the light-shielded image 131 having a similar dark current amount can thereby be selected with high accuracy.
  • the image sensor 101 may be an organic sensor.
  • a control method includes an imaging element 101 capable of nondestructive reading, an imaging system 106 that collects light on the imaging element 101, and a light shielding unit 107 that shields light from the imaging system 106.
  • the control method of the imaging apparatus 100 includes a correction step of generating a corrected image 142 by subtracting the correction image 141 from the main image 121 obtained by the imaging element 101.
  • the light shielding state is performed once.
  • a plurality of light-shielded images 131 obtained by the image sensor 101 by the above exposure and having different exposure times are acquired using nondestructive readout, and a correction image 141 is generated using at least one of the plurality of light-shielded images 131.
  • the imaging device according to the embodiment of the present disclosure has been described above, but the present disclosure is not limited to this embodiment.
  • each processing unit included in the imaging apparatus is typically realized as an LSI that is an integrated circuit. These may be individually made into one chip, or may be made into one chip so as to include a part or all of them.
  • circuits are not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor.
  • An FPGA Field Programmable Gate Array
  • reconfigurable processor that can reconfigure the connection and setting of circuit cells inside the LSI may be used.
  • each component may be configured by dedicated hardware or may be realized by executing a software program suitable for each component.
  • Each component may be realized by a program execution unit such as a CPU or a processor reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.
  • the present disclosure may be realized as a control method executed by the imaging apparatus.
  • circuit configuration shown in the circuit diagram is an example, and the present disclosure is not limited to the circuit configuration. That is, similar to the circuit configuration described above, a circuit that can realize the characteristic function of the present disclosure is also included in the present disclosure. Moreover, all the numbers used above are illustrated for specifically explaining the present disclosure, and the present disclosure is not limited to the illustrated numbers.
  • division of functional blocks in the block diagram is an example, and a plurality of functional blocks can be realized as one functional block, a single functional block can be divided into a plurality of functions, or some functions can be transferred to other functional blocks. May be.
  • functions of a plurality of functional blocks having similar functions may be processed in parallel or time-division by a single hardware or software.
  • the imaging device has been described based on the embodiment, but the present disclosure is not limited to this embodiment. Unless it deviates from the gist of the present disclosure, various modifications conceived by those skilled in the art have been made in this embodiment, and forms constructed by combining components in different embodiments are also within the scope of one or more aspects. May be included.
  • the present disclosure can be applied to an imaging apparatus such as a digital still camera or a digital video camera.
  • DESCRIPTION OF SYMBOLS 100 Image pick-up device 101 Image pick-up element 102 Control part 103 Display part 104 Storage part 105 Correction part 106 Imaging system 107 Light-shielding part 121 Main image 122,132 Effective area 123, 133 OB area 131 Light-shielded image 141 Image for correction 142 Image after correction 201 Pixel 202 vertical scanning unit 203 column signal processing unit 204 horizontal readout unit 205 reset control line 206 address control line 207 vertical signal line 208 horizontal output terminal 211 photoelectric conversion unit 212 charge storage unit 213 reset transistor 214 amplification transistor 215 selection transistor

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Abstract

La présente invention concerne un dispositif d'imagerie (100) doté : d'un élément d'imagerie (101) qui peut être lu de manière non destructive ; d'un système d'imagerie (106) qui concentre la lumière sur l'élément d'imagerie (101) ; d'une unité de protection contre la lumière (107) qui protège la lumière du système d'imagerie (106) ; et d'une unité de correction (105) qui génère une image corrigée (142) en soustrayant une image de correction (141) à partir d'une image principale (121) obtenue au moyen de l'élément d'imagerie (101). L'unité de correction (105) utilise une lecture non destructive afin d'acquérir une pluralité d'images protégées contre la lumière (131), qui sont obtenues au moyen de l'élément d'imagerie (101) en tant qu'un résultat d'une exposition dans un état protégé contre la lumière, et qui ont chacun des temps d'exposition différents, et utilise au moins une image de la pluralité d'images protégées contre la lumière (131) afin de générer l'image de correction (141).
PCT/JP2017/046600 2016-12-27 2017-12-26 Dispositif d'imagerie et procédé de commande associé WO2018124056A1 (fr)

Applications Claiming Priority (2)

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JP2016254452A JP6748979B2 (ja) 2016-12-27 2016-12-27 撮像装置及びその制御方法
JP2016-254452 2016-12-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019125945A (ja) * 2018-01-17 2019-07-25 キヤノン株式会社 放射線撮像装置、放射線撮像装置の制御方法およびプログラム

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0851571A (ja) * 1994-08-03 1996-02-20 Olympus Optical Co Ltd 電子的撮像装置
JP2004344249A (ja) * 2003-05-20 2004-12-09 Canon Inc 放射線撮影装置、放射線撮影方法、放射線撮影プログラム及び記録媒体
JP2013090088A (ja) * 2011-10-17 2013-05-13 Canon Inc 撮像装置、撮像装置の駆動方法および制御プログラム
JP2016134655A (ja) * 2015-01-15 2016-07-25 キヤノン株式会社 撮像装置、撮像装置の制御方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0851571A (ja) * 1994-08-03 1996-02-20 Olympus Optical Co Ltd 電子的撮像装置
JP2004344249A (ja) * 2003-05-20 2004-12-09 Canon Inc 放射線撮影装置、放射線撮影方法、放射線撮影プログラム及び記録媒体
JP2013090088A (ja) * 2011-10-17 2013-05-13 Canon Inc 撮像装置、撮像装置の駆動方法および制御プログラム
JP2016134655A (ja) * 2015-01-15 2016-07-25 キヤノン株式会社 撮像装置、撮像装置の制御方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019125945A (ja) * 2018-01-17 2019-07-25 キヤノン株式会社 放射線撮像装置、放射線撮像装置の制御方法およびプログラム
JP7033932B2 (ja) 2018-01-17 2022-03-11 キヤノン株式会社 放射線撮像装置、放射線撮像装置の制御方法およびプログラム

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