JP2007312349A5

JP2007312349A5 -

Info

Publication number: JP2007312349A5
Application number: JP2006273862A
Authority: JP
Filing date: 2006-10-05
Publication date: 2009-07-30
Anticipated expiration: 2026-10-05

Claims

  A spatial processing unit that performs predetermined spatial processing using pixels around the target pixel on the input image signal and outputs a processing signal;
  With the processed signal and the image signal as inputs,
  When the value of the image signal is fixed at a predetermined level, an output signal creation unit that outputs an output signal that exhibits a monotonic decrease characteristic with respect to the value of the processing signal;
With
  The output signal generator is
  A visual processing unit that outputs a gain signal in accordance with the processed signal and the image signal;
  A correction unit that corrects the image signal based on the gain signal and outputs it as an output signal;
Having
  Visual processing device.

  The image signal is a luminance signal and a chromaticity signal,
  The correction unit corrects the luminance signal based on the gain signal, and outputs a corrected luminance signal;
  A second correction unit that corrects the chromaticity signal based on the gain signal and outputs the corrected chromaticity signal;
  The visual processing device according to claim 1.

  The image signal is three primary color signals,
  The correction unit is
  Correcting each of the three primary color signals based on the gain signal, and outputting the corrected three primary color signals;
  The visual processing device according to claim 1.

  The gain signal is further limited as a corrected gain signal by limiting the gain signal with a set limit value,
  The correction unit is
  Correcting the image signal based on the modified gain signal;
  The visual processing device according to claim 1.

  According to the set correction value, the gain signal is corrected so as to approach 1 and further includes a gain correction unit that outputs the correction signal as a correction gain signal.
  The correction unit is
  Correcting the image signal based on the modified gain signal;
  The visual processing device according to claim 1.

  The limit value is
  Based on the maximum value among the three primary color signals of the image signal,
  The visual processing device according to claim 4.

  The correction value is
  Based on the maximum value among the three primary color signals of the image signal,
  The visual processing device according to claim 5.

  The limit value is
  An average signal level detected from the image signal in one frame or one field,
  The degree of skin color detected from the image signal,
  Program information attached to the image signal transmitted or broadcast,
  Based on at least one of the electric field strength values when the communication or broadcast image signal is received,
  The visual processing device according to claim 4.

  The correction value is
  An average signal level detected from the image signal in one frame or one field,
  The degree of skin color detected from the image signal,
  Program information attached to the image signal transmitted or broadcast,
  Based on at least one of the electric field strength values when the communication or broadcast image signal is received,
  The visual processing device according to claim 5.

  A spatial processing unit that performs predetermined spatial processing using pixels around the target pixel on the input image signal and outputs a processing signal;
  With the processed signal and the image signal as inputs,
  When the value of the image signal is fixed at a predetermined level, an output signal creation unit that outputs an output signal that exhibits a monotonic decrease characteristic with respect to the value of the processing signal;
  A display unit for displaying the output signal;
  The output signal generator is
  A visual processing unit that outputs a gain signal in accordance with the processed signal and the image signal;
A correction unit that corrects the image signal based on the gain signal and outputs it as an output signal;
It is characterized by having
  Image display device.

  A receiver for receiving a video signal;
  A decoding unit for decoding the video signal and outputting an image signal;
  A spatial processing unit that performs predetermined spatial processing using pixels around the target pixel on the image signal and outputs a processing signal;
  With the processed signal and the image signal as inputs,
  When the value of the image signal is fixed at a predetermined level, an output signal creation unit that outputs an output signal that exhibits a monotonic decrease characteristic with respect to the value of the processing signal;
  A display for displaying the output signal;
With
  The output signal generator is
  A visual processing unit that outputs a gain signal in accordance with the processed signal and the image signal;
A correction unit that corrects the image signal based on the gain signal and outputs it as an output signal;
  Having
  television.

  A receiver for receiving a video signal;
  A decoding unit for decoding the video signal and outputting an image signal;
  A spatial processing unit that performs predetermined spatial processing using pixels around the target pixel on the image signal and outputs a processing signal;
  With the processed signal and the image signal as inputs,
  When the value of the image signal is fixed at a predetermined level, an output signal creation unit that outputs an output signal that exhibits a monotonic decrease characteristic with respect to the value of the processing signal;
  A display for displaying the output signal;
With
  The output signal generator is
  A visual processing unit that outputs a gain signal in accordance with the processed signal and the image signal;
A correction unit that corrects the image signal based on the gain signal and outputs it as an output signal;
Having
  Mobile information terminal.

  A shooting unit for shooting an image and creating an image signal;
  A spatial processing unit that performs predetermined spatial processing using pixels around the target pixel on the image signal and outputs a processing signal;
  With the processed signal and the image signal as inputs,
  When the value of the image signal is fixed at a predetermined level, an output signal creation unit that outputs an output signal that exhibits a monotonic decrease characteristic with respect to the value of the processing signal;
  A display for displaying the output signal;
With
  The output signal generator is
  A visual processing unit that outputs a gain signal in accordance with the processed signal and the image signal;
A correction unit that corrects the image signal based on the gain signal and outputs it as an output signal;
Having
  camera.

  A spatial processing step of performing predetermined spatial processing using pixels around the target pixel on the input image signal and outputting a processing signal;
  With the processed signal and the image signal as inputs,
  When the value of the image signal is fixed at a predetermined level, an output signal creation step of outputting an output signal that exhibits a monotonic decrease characteristic with respect to the value of the processing signal;
Including
  The output signal creating step includes
  A visual processing step of outputting a gain signal in response to the processed signal and the image signal;
A correction step of correcting the image signal based on the gain signal and outputting it as an output signal;
Having
  Visual processing method.

  An integrated circuit used in an image output device,
  A spatial processing step of performing predetermined spatial processing using pixels around the target pixel on the input image signal and outputting a processing signal;
  With the processed signal and the image signal as inputs,
  When the value of the image signal is fixed at a predetermined level, an output signal creation step of outputting an output signal that exhibits a monotonic decrease characteristic with respect to the value of the processing signal;
Run
  The output signal creating step includes
  A visual processing step of outputting a gain signal in response to the processed signal and the image signal;
A correction step of correcting the image signal based on the gain signal and outputting it as an output signal;
Have
  An integrated circuit used in an image output device.

  An image processing program for visual processing by a computer,
  The image processing program includes:
  A spatial processing step of performing predetermined spatial processing using pixels around the target pixel on the input image signal and outputting a processing signal;
  With the processed signal and the image signal as inputs,
  When the value of the image signal is fixed at a predetermined level, an output signal creation step of outputting an output signal that exhibits a monotonic decrease characteristic with respect to the value of the processing signal;
A visual processing method including a computer,
  The output signal creating step includes
  A visual processing step of outputting a gain signal in response to the processed signal and the image signal;
A correction step of correcting the image signal based on the gain signal and outputting it as an output signal;
Having
  Image processing program.