Image processing device and method, image transmission/receptor system and method, and providing medium

• US 6,480,202 B1
• Filed: 08/09/1999
• Issued: 11/12/2002
• Est. Priority Date: 10/31/1997
• Status: Expired due to Term

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Deguchi, Tatsuya, Kato, Naoya
• Primary Examiner(s): Razavi, Michael
• Assistant Examiner(s): Yang, Ryan R
• Application Number:
  US09/331,880
• Time in Patent Office: 1,191 Days
• Field of Search: 345/153, 345/150, 345/154, 345/600, 345/603, 345/589, 382/167, 382/274, 358/504, 358/518, 348/602, 348/603, 348/179, 348/655
• US Class Current: 345/600
• CPC Class Codes: G06F 3/14 Digital output to display device ; Cooperation and interconnection of the display device with other functional units
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2320/066 for control of contrast
• CPC Class Codes: G09G 2360/144 the light being ambient light
• CPC Class Codes: G09G 5/00 Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators image data processing or generation, in general G06T
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607
• CPC Class Codes: H04N 1/603 controlled by characteristics of the picture signal generator or the picture reproducer
• CPC Class Codes: H04N 1/6088 by viewing conditions, i.e. conditions at picture output
• CPC Class Codes: H04N 5/58 in dependence upon ambient light

Abstract

Information on ambient light (viewing environment information) input from ambient light input section 101 is fed to viewing environment converting section 100a, which determines measured color values of monitor 103, and then fed to profile updating section 100b and contrast correcting section 100d. The contrast correcting section 100d corrects the contrast according to the measured color values. Information on the setting of the monitor 103 fed from monitor control section 102 is supplied to monitor setting values converting section 100c, where TRCs and a matrix are generated according to the modified setting information and supplied to the profile updating section 100b. The profile updating section 100b updates the profiles stored in memory 104a by means of newly generated profiles.

Claims

1. An image transmission/reception system for transmitting image data input by the input device of a transmitter to the device of a receiver, performing predetermined processing operations on said data by means of the device of said receiver and outputting said data to an output device, characterized in that:

said device of said transmitter comprises;

first memory means for storing the (chromatic) profiles of said input device;

second memory means for storing the initial operating information obtained when said profiles are prepared;

input means for inputting the current operating information of said input device;

adding means for adding said profiles, said initial operating information and said current operating information to the image data input by said input device; and

transmission means for transmitting said image data with information added thereto by said adding means to said device of said receiver;

whereas said device of said receiver comprises;

reception means for receiving the image data transmitted by said transmission means;

extraction means for extracting said profiles, said initial operating information and said current operating information from said image data received by said reception means; and

correcting means for correcting said image data according to said profiles, said initial operating information and said current operating information extracted by said extraction means.

2. An image transmission/reception method of an image transmission/reception system for transmitting image data input by the input device of a transmitter to the device of a receiver, performing predetermined processing operations on said data by means of the device of said receiver and outputting said data to an output device, characterized in that:

said transmission method comprises;

a first step of storing the (chromatic) profiles of said input device;

a second step of storing the initial operating information obtained when said profiles are prepared;

an input step for inputting the current operating information of said input device;

an adding step of adding said profiles, said initial operating information and said current operating information to the image data input by said input device; and

a transmitting step of transmitting said image data with information added thereto by said adding means to said device of said receiver;

whereas said reception method comprises;

a receiving step of receiving the image data transmitted by said transmission means;

an extracting step of extracting said profiles, said initial operating information and said current operating information from said image data received by said reception means; and

a correcting step of correcting said image data according to said profiles, said initial operating information and said current operating information extracted by said extraction means.

3. A providing medium, characterized by providing an image transmission/reception system for transmitting image data input by the input device of a transmitter to the device of a receiver, performing predetermined processing operations on said data by means of the device of said receiver and outputting said data to an output device with a computer-readable program for causing:

said device of said transmitter to carry out a processing operation comprising;

a first step of storing the (chromatic) profiles of said input device;

a second step of storing the initial operating information obtained when said profiles are prepared;

an input step for inputting the current operating information of said input device;

an adding step of adding said profiles, said initial operating information and said current operating information to the image data input by said input device; and

a transmitting step of transmitting said image data with information added thereto by said adding means to said device of said receiver;

whereas said device of said receiver to carry out a processing operation comprising steps of;

a receiving step of receiving the image data transmitted by said transmission means;

an extraction step of extracting said profiles, said initial operating information and said current operating information from said image data received by said reception means; and

a correcting step of correcting said image data according to said profiles, said initial operating information and said current operating information extracted by said extraction means.

4. An image processing apparatus adapted to cause a display section having three primary colors to display images corresponding to image data, characterized by comprising:

first detection means for detecting any emission of light of said display section in a state where no image data is applied thereto;

second detection means for detecting if the law of addition for mixing colors holds true or not; and

generation means for generating a 3×

4 matrix for obtaining device-independent color signals including signal elements for offsetting the emission of light, if any, in a state where no image data is applied to the display section, in response to the outcome of detection of said first detection means and that of said second detection means;

whereby the second detection means detects that the law of addition holds true when a detected maximum brightness for white corresponds, within a predetermined tolerance, to the sum of the maximum brightness values for the three primary colors of the display section.

5. An image processing apparatus according to claim 4, characterized in that:

said 3×

4 matrix is a matrix for obtaining XYZ3-stimulus values from the data obtained by means of tone reproduction curves.

14. An image processing apparatus according to claim 4 wherein said three primary colors are red, green and blue.

15. An image processing apparatus according to claim 4 wherein said predetermined tolerance is between 95 and 105 percent of the sum of the maximum brightness values for the three primary colors.

6. An image processing method to be used for an image processing apparatus adapted to cause a display section having three primary colors to display images corresponding to image data, characterized by comprising:

detecting any emission of light of said display section in a state where no image data is applied thereto;

detecting if the law of addition for mixing colors holds true or not; and

generating a 3×

4 matrix for obtaining device-independent color signals including signal elements for offsetting the emission of light, if any, in a state where no image data is applied to the display section, in response to the outcome of said light emission detecting and said law of addition detecting;

whereby the law of addition is detected to hold true when a detected maximum brightness for white corresponds, within a predetermined tolerance, to the sum of the maximum brightness values for the three primary colors of the display section.

7. A providing medium characterized by providing an image processing apparatus adapted to cause a display section having three primary colors to display images corresponding to image data with a computer-readable program for causing said apparatus to perform a processing operation comprising:

detecting any emission of light of said display section in a state where no image data is applied thereto;

detecting if the law of addition for mixing colors holds true or not; and

generating a 3×

4 matrix for obtaining device-independent color signals including signal elements for offsetting the emission of light, if any, in a state where no image data is applied to the display section, in response to the outcome of said light emission detecting and said law of addition detecting;

whereby the law of addition is detected to hold true when a detected maximum brightness for white corresponds, within a predetermined tolerance, to the sum of the maximum brightness values for the three primary colors of the display section.

8. An image processing apparatus adapted to cause a display section to display images corresponding to image data, characterized by comprising:

detection means for detecting if the law of proportion for spectral distribution holds true or not;

first generation means for generating nine tone reproduction curves in response to the outcome of detection of said detection means; and

second generation means for generating formulas for obtaining device-independent color signals from said nine tone reproduction curves generated by said first generation means and the 3-stimulus values for the black level;

wherein said images are displayed on said display section based on said device-independent color signals;

whereby the law of proportion is detected to hold true when the profile of spectral distribution of the colors of RGB of the image processing apparatus is detected to be constant regardless of their intensities.

9. An image processing method to be used for an image processing apparatus adapted to cause a display section to display images corresponding to image data, characterized by comprising:

detecting if the law of proportion for spectral distribution holds true or not;

generating nine tone reproduction curves in response to the outcome of detection of said detection step;

generating formulas for obtaining device-independent color signals from said nine tone reproduction curves generated in said first generation step and the 3-stimulus values for the black level; and

displaying images on said display section based on said device-independent color signals;

whereby the law of proportion is detected to hold true when the profile of spectral distribution of the colors of RGB of the image processing apparatus is detected to be constant regardless of their intensities.

10. A providing medium characterized by providing an image processing apparatus adapted to cause a display section to display images corresponding to image data with a computer-readable program for causing said apparatus to perform a processing operation comprising:

detecting if the law of proportion for spectral distribution holds true or not;

generating nine tone reproduction curves in response to the outcome of detection of said detection step;

generating formulas for obtaining device-independent color signals from said nine tone reproduction curves generated in said first generation step and the 3-stimulus values for the black level; and

displaying images on said display section based on said device-independent color signals;

whereby the law of proportion is detected to hold true when the profile of spectral distribution of the colors of RGB of the image processing apparatus is detected to be constant regardless of their intensities.

11. An image processing apparatus adapted to modify images signals to be output to a monitor by means of (chromatic) profiles reflecting the (chromatic) characteristics of said monitor, characterized by comprising:

input means for acquiring input setting information of said monitor, said setting information indicating the reference white point of said monitor;

updating means for updating said profiles according to said input setting information, wherein said updating means modifies a tone reproduction curve and matrices of said profiles according to said information indicating the reference white point; and

storing means for storing said profiles updated by said updating means.

12. An image processing method for modifying image signals to be output to a monitor by means of (chromatic) profiles reflecting the (chromatic) characteristics of said monitor, characterized by comprising the steps of:

acquiring input setting information indicating a setting of said monitor;

updating said profiles according to said setting information input in said input step; and

storing said profiles updated by said updating step, wherein,

said setting information is information indicating the contrast or the brightness of the image to be output to said monitor; and

said updating comprises modifying tone reproduction curves of said profiles according to said contrast or brightness information.

13. A providing medium characterized by providing an image processing apparatus adapted to modify image signals to be output to a monitor by means of (chromatic) profiles reflecting the (chromatic) characteristics of said monitor with a computer-readable program for causing said apparatus to perform a processing operation comprising steps of:

acquiring input setting information indicating a setting of said monitor;

updating said profiles according to said setting information input in said input step; and

storing said profiles updated by said updating step;

wherein,

said setting information is information indicating the contrast or the brightness of the image to be output to said monitor; and

said updating comprises modifying tone reproduction curves of said profiles according to said contrast or brightness information.