JP2013110644A5

JP2013110644A5 -

Info

Publication number: JP2013110644A5
Application number: JP2011255190A
Authority: JP
Filing date: 2011-11-22
Publication date: 2014-08-07
Anticipated expiration: 2031-11-22

Description

本発明に係る撮像装置は、撮像手段と、撮像手段が撮像した映像信号中の注目画素と注目画素の複数の周辺画素の各画素値に係数を掛ける演算手段と、演算手段で係数が掛けられた各画素値を加算する加算手段と、加算手段から出力された信号より画面の明るさを算出し、画面の明るさが予め決められた範囲となるよう、係数を制御する制御手段とを設けたものである。 An imaging apparatus according to the present invention includes an imaging unit, a calculation unit that multiplies each pixel value of a target pixel and a plurality of peripheral pixels of the target pixel in a video signal captured by the imaging unit, and a coefficient multiplied by the calculation unit. And adding means for adding the pixel values, and calculating means for controlling the coefficient so that the brightness of the screen is calculated from a signal output from the adding means and the brightness of the screen falls within a predetermined range. It is a thing.

本発明に係る輝度制御方法は、撮像手段が撮像した映像信号中の注目画素と注目画素の複数の周辺画素の各画素値に係数を掛ける演算処理と、演算処理により係数が掛けられた各画素値を加算する加算処理と、加算処理で加算された信号より画面の明るさを算出し、画面の明るさが予め決められた範囲となるよう、係数を制御する制御処理を含むものである。 The luminance control method according to the present invention includes a calculation process for multiplying each pixel value of a target pixel and a plurality of peripheral pixels of the target pixel in a video signal captured by an imaging unit, and each pixel multiplied by the coefficient by the calculation process It includes an addition process for adding values and a control process for calculating the brightness of the screen from the signals added in the addition process and controlling the coefficient so that the brightness of the screen falls within a predetermined range .

Claims

  Imaging means;
  Arithmetic means for multiplying each pixel value of a pixel of interest in the video signal imaged by the imaging means and a plurality of peripheral pixels of the pixel of interest;
  Adding means for adding each pixel value multiplied by a coefficient by the calculating means;
  Control means for calculating the brightness of the screen from the signal output from the adding means and controlling the coefficient so that the brightness of the screen falls within a predetermined range;
An imaging apparatus comprising:

Signal processing means for outputting a video signal output from the imaging means as an imaging signal of a predetermined scanning method,
The target pixel and the plurality of peripheral pixels are obtained by delaying the imaging signal output from the signal processing unit by at least one of a field unit, a frame unit, a line unit, or a pixel unit. The imaging apparatus according to claim 1.

The imaging apparatus according to claim 1, wherein the control unit stores the coefficient as a table and controls the coefficient based on brightness of the screen.

The control means performs brightness control using iris control for adjusting the amount of light incident on the imaging means in accordance with the illuminance of the imaging environment, and gain control for adjusting the amplification gain of the video signal, and the gain control and The imaging apparatus according to any one of claims 1 to 3, wherein brightness control by addition processing of the adding means is selectively controlled.

  Arithmetic processing for multiplying each pixel value of a pixel of interest in the video signal captured by the imaging means and a plurality of peripheral pixels of the pixel of interest;
  Addition processing for adding each pixel value multiplied by a coefficient by the arithmetic processing,
  A brightness control method including a control process of calculating the brightness of the screen from the signal added in the addition process and controlling the coefficient so that the brightness of the screen falls within a predetermined range.