Image processing method, image processor, and image display system

Abstract

An image processing method, which performs color correction on a superimposed image obtained by superimposing a first image formed by a first image forming unit and a second image formed by a second image forming unit, includes controlling the dimming of the first image forming unit and the second image forming unit on the basis of dimming rates set in the first image forming unit and the second image forming unit in response to a given designated dimming rate, and performing a color correction process on image signals corresponding to the first image forming unit and the second image forming unit using a color correction value corresponding to the dimming rates of the first image forming unit and the second image forming unit.

What is claimed is: 
     
         1 . An image processing method which performs color correction on a superimposed image obtained by superimposing a first image formed by a first image forming unit and a second image formed by a second image forming unit, the method comprising:
 controlling the dimming of the first image forming unit and the second image forming unit on the basis of dimming rates set in the first image forming unit and the second image forming unit in response to a given designated dimming rate.   
     
     
         2 . The method according to  claim 1 , further comprising:
 calculating a color correction target value corresponding to the first image forming unit and the second image forming unit on the basis of a value obtaining by totaling color characteristic values of the first image and the second image in accordance with the dimming rates of the first image forming unit and the second image forming unit; and   generating the color correction value corresponding to the first image forming unit and the second image forming unit on the basis of the color correction target value calculated in the calculating of the color correction target value,   wherein, in the performing of the color correction process, the color correction process is performed using the color correction value generated in the generating of the color correction value.   
     
     
         3 . The method according to  claim 1 , further comprising:
 calculating the dimming rates of the first image forming unit and the second image forming unit on the basis of the designated dimming rate and color characteristic values of the first image and the second image,   wherein, in the controlling of the dimming, the dimming of the first image forming unit and the second image forming unit is performed on the basis of the dimming rates calculated in the calculating of the dimming rates.   
     
     
         4 . The method according to  claim 1 ,
 wherein the average value of the dimming rates of the first image forming unit and the second image forming unit is equal to the designated dimming rate.   
     
     
         5 . An image processor which performs color correction on a superimposed image obtained by superimposing a first image formed by a first image forming unit and a second image, formed by a second image forming unit, the image processor comprising:
 a dimming control unit that controls the dimming of the first image forming unit and the second image forming unit on the basis of dimming rates set in the first image forming unit and the second image forming unit in response to a given designated dimming rate.   
     
     
         6 . The image processor according to  claim 5 , further comprising:
 a light source luminance calculation unit that calculates the dimming rates of the first image forming unit and the second image forming unit on the basis of the designated dimming rate and the color characteristic values of the first image and the second image,
 wherein the dimming control unit controls the dimming of the first image forming unit and the second image forming unit on the basis of the dimming rates calculated by the light source luminance calculation unit. 
   
     
     
         7 . An image display system comprising:
 the image processor according to  claim 5 ;   a first image display device that has the first image forming unit whose dimming is controlled by the dimming control unit; and   a second image display device that has the second image forming unit whose dimming is controlled by the dimming control unit.   
     
     
         8 . An image display system comprising:
 the image processor according to  claim 6 ;   a first image display device that has the first image forming unit whose dimming is controlled by the dimming control unit; and   a second image display device that has the second image forming unit whose dimming is controlled by the dimming control unit.