JP2019220925A5 - - Google Patents
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- JP2019220925A5 JP2019220925A5 JP2018119132A JP2018119132A JP2019220925A5 JP 2019220925 A5 JP2019220925 A5 JP 2019220925A5 JP 2018119132 A JP2018119132 A JP 2018119132A JP 2018119132 A JP2018119132 A JP 2018119132A JP 2019220925 A5 JP2019220925 A5 JP 2019220925A5
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Description
本開示は、撮像により撮像映像データを取得する撮像デバイスと、前記撮像映像データから得られる第１階調よりも階調値が小さい第２階調の表示映像データを生成して出力する映像出力部と、を有し、前記映像出力部は、前記撮像映像データの輝度値全体に渡って各輝度値のノイズレベルの総和が一様になるように、前記撮像映像データに対して加算ノイズを付加するノイズ付加部と、前記加算ノイズを付加した後の映像データを前記第２階調の表示映像データに変換する変調部と、を含む、撮像装置を提供する。 The present disclosure generates an imaging device for acquiring by Ri IMAGING image data to the imaging, the display image data of the second tone gradation value than the first gradation obtained the captured image data or we are small The video output unit includes a video output unit for outputting, and the video output unit with respect to the captured video data so that the sum of the noise levels of the respective brightness values is uniform over the entire brightness value of the captured video data. Provided is an image pickup apparatus including a noise adding unit for adding additional noise and a modulation unit for converting video data after adding the added noise into display video data of the second gradation.
また、本開示は、撮像デバイスにより撮像映像データを取得するステップと、前記撮像映像データの輝度値全体に渡って各輝度値のノイズレベルの総和が一様になるように、前記撮像映像データに対して加算ノイズを付加するステップと、前記加算ノイズを付加した後の映像データを用いて、前記撮像映像データから得られる第１階調よりも階調値が小さい第２階調の表示映像データを生成するステップと、前記第２階調の表示映像データを表示装置に出力するステップと、を有する映像出力方法を提供する。 The present disclosure, as acquiring Ri IMAGING video data by the imaging device, throughout the luminance value of the captured image data is the sum of the noise level of each luminance value becomes uniform, the imaging a step of adding an addition noise to the video data, the adding noise by using the video data after addition of the second gradation tone value is smaller than the video image data or first gradation obtained Provided is a video output method including a step of generating display video data of the above and a step of outputting the display video data of the second gradation to a display device.
Claims (8)
前記撮像映像データから得られる第１階調よりも階調値が小さい第２階調の表示映像データを生成して出力する映像出力部と、を有し、
前記映像出力部は、
前記撮像映像データの輝度値全体に渡って各輝度値のノイズレベルの総和が一様になるように、前記撮像映像データに対して加算ノイズを付加するノイズ付加部と、
前記加算ノイズを付加した後の映像データを前記第２階調の表示映像データに変換する変調部と、を含む、
撮像装置。 An imaging device for acquiring an imaging video data Ri by the imaging,
Anda video output section for generating and outputting a display image data of the second tone gradation value is smaller than the first gradation obtained the captured image data or al,
The video output unit
A noise addition section that adds additional noise to the captured video data so that the sum of the noise levels of each brightness value is uniform over the entire brightness value of the captured video data.
A modulation unit that converts the video data after adding the added noise into the display video data of the second gradation is included.
Imaging device.
前記撮像映像データは、人間の死角時間感度を超える高フレームレートである、The captured video data has a high frame rate that exceeds the human blind spot time sensitivity.
撮像装置。Imaging device.
前記映像出力部は、
前記撮像デバイスから出力される第１のビット数を有する前記第１階調の撮像映像データに基づき、前記第１のビット数よりも小さい第２のビット数を有する前記第２階調の表示映像データを生成して出力する、
撮像装置。 The imaging device according to claim 1.
The video output unit
The display image of the second gradation having a second bit number smaller than the first bit number based on the captured image data of the first gradation having the first bit number output from the imaging device. Generate and output data,
Imaging device.
前記ノイズ付加部は、前記第１階調の撮像映像データの輝度値に応じた前記加算ノイズの振幅範囲を算出する演算部と、前記算出された振幅範囲のランダムなノイズを前記加算ノイズとして出力するノイズ発生器と、前記撮像映像データと前記加算ノイズとを加算する加算器と、を含み、
前記変調部は、前記第１階調の撮像映像データに対して前記加算ノイズが付加された映像データを、前記第２階調の映像データに量子化して前記表示映像データとして順次出力する量子化器を含む、
撮像装置。 The imaging device according to claim 3.
The noise addition unit outputs a calculation unit that calculates the amplitude range of the added noise according to the brightness value of the captured image data of the first gradation, and a random noise of the calculated amplitude range as the added noise. A noise generator for adding noise, and an adder for adding the captured image data and the added noise.
The modulation unit quantizes the video data in which the additional noise is added to the captured video data of the first gradation into the video data of the second gradation and sequentially outputs it as the display video data. Including the vessel,
Imaging device.
前記ノイズ付加部は、装置において発生されるランダムなノイズを、前記撮像デバイスから出力される撮像映像データの輝度値に応じた振幅に増幅し、前記加算ノイズとして出力する可変増幅器と、前記撮像デバイスから出力される撮像映像データと前記加算ノイズとを重畳して出力する加算増幅回路と、を含み、
前記変調部は、前記加算増幅回路から出力されるノイズ付加後のアナログの映像信号を、前記第２階調のディジタルデータに変換して前記表示映像データとして順次出力するＡＤコンバータを含む、
撮像装置。 The imaging device according to claim 1.
The noise addition unit amplifies the random noise generated in the apparatus to an amplitude corresponding to the brightness value of the captured image data output from the imaging device, and outputs the added noise as the variable amplifier and the imaging device. Includes an add-amplifier circuit that superimposes and outputs the captured image data output from
The modulation unit includes an AD converter that converts the noise-added analog video signal output from the amplifier circuit into digital data of the second gradation and sequentially outputs the display video data.
Imaging device.
前記高フレームレートの撮像映像データとして４８０ｆｐｓ以上のフレームレートの映像データを取得する、
撮像装置。 The imaging device according to claim 2.
Acquire video data having a frame rate of 480 fps or more as the captured video data having a high frame rate.
Imaging device.
前記ノイズ付加部は、前記撮像映像データの輝度値に応じて、前記輝度値が増加するにつれて前記加算ノイズを減少させて付加し、前記撮像デバイスにおいて発生する固有ノイズと前記加算ノイズとを含むノイズレベルの総和が前記撮像映像データの輝度値全体に渡って一様となっている、
撮像装置。 The imaging device according to any one of claims 1 to 6.
The noise addition unit reduces and adds the added noise as the luminance value increases according to the luminance value of the captured image data, and adds noise including the intrinsic noise generated in the imaging device and the added noise. The sum of the levels is uniform over the entire brightness value of the captured image data.
Imaging device.
前記撮像映像データの輝度値全体に渡って各輝度値のノイズレベルの総和が一様になるように、前記撮像映像データに対して加算ノイズを付加するステップと、
前記加算ノイズを付加した後の映像データを用いて、前記撮像映像データから得られる第１階調よりも階調値が小さい第２階調の表示映像データを生成するステップと、
前記第２階調の表示映像データを表示装置に出力するステップと、
を有する映像出力方法。 Acquiring Ri IMAGING video data by the imaging device,
A step of adding additional noise to the captured image data so that the sum of the noise levels of each brightness value becomes uniform over the entire brightness value of the captured image data.
Generating a display image data of the adding noise by using the video data after addition of the second gradation is smaller grayscale value than the video image data or we first gradation obtained,
The step of outputting the display video data of the second gradation to the display device, and
Video output method having.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| JP2018119132A JP7149514B2 (en) | 2018-06-22 | 2018-06-22 | Imaging device and video output method |
| JP2022146045A JP7445904B2 (en) | 2018-06-22 | 2022-09-14 | Video output device, video output method, and video output system |
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| JP2022146045A Division JP7445904B2 (en) | 2018-06-22 | 2022-09-14 | Video output device, video output method, and video output system |
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| Publication Number | Publication Date |
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| JP2019220925A JP2019220925A (en) | 2019-12-26 |
| JP2019220925A5 true JP2019220925A5 (en) | 2021-08-05 |
| JP7149514B2 JP7149514B2 (en) | 2022-10-07 |
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| JP4107108B2 (en) | 2003-03-05 | 2008-06-25 | コニカミノルタビジネステクノロジーズ株式会社 | Image processing method and apparatus |
| JP4498804B2 (en) | 2003-04-02 | 2010-07-07 | シャープ株式会社 | Image display device drive device, image display device, television receiver, image display device drive method, image display method, program thereof, and recording medium |
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