Display Undistortion : problems loading config file

Question

Alessandro 2011-12-16

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/24150-display-undistortion-problems-loading-config-file

Hi everyone

I use the Psychtoolbox to display some stimuli with a projector, on a curbed screen.

I need correct the (multiple) distortion of the image. I used "DisplayUndistortionBVL" to generate the "undistortion config file". The file generation is ok.

Now.. I load the file as indicated, but when I draw sometings, the distortion is not corrected (I have no changes! I have no error notification)

Could someone help me, please ..?

Thanks in advance

- - -

Here the code:

%%Screen dimension
ScreenXpix = 1024  ;
ScreenYpix =  768  ;
centroschermo = [ (ScreenXpix/2) (ScreenYpix/2) ]  ;

--------------- PARAMETERS and initialization ----------------%

flipSpdwindow = 0;
whichScreen = 1;           % working window      ----------     
rcD = 1;                            % duration of the Red Cross Fixation presentation  [sec]    
data = [];
%%---------------------      COLORS     -------------------------%
white = [255 255 255]; 
gray = [128 128 128];
Dgray = [54 54 54];
black = [0 0 0];
blue =  [100 100 250];
red = [200 50 50];
green = [21 152 18]; 
%%---------------------  Open Working Window ---------------------%
% on line window
rec = Screen('Rect',whichScreen);                                                          %  Screen selection
[W, H]=Screen('WindowSize', whichScreen);      
*%  Display Undistortion BVL
%  [window, rect] = Screen('OpenWindow', whichScreen, black, rec);      %  Apre la finestra grafica
PsychImaging('PrepareConfiguration');
PsychImaging('AddTask', 'AllView', 'GeometryCorrection', 'C:\Documents and Settings\acarlini\Application Data\Psychtoolbox\GeometryCalibration\BVLCalibdata_1_1280_1024.mat', 0, 73 , 53) ;
[window , rect] = PsychImaging('OpenWindow', whichScreen, black, rec);*      
monitorFlipInterval = Screen('GetFlipInterval', window);                           %  Frequenza di refresh del display
% Screen center
centroschermo = (rec (3:4) ) /2  ;

Window corners

% Up Left
Screen('FillRect',window, blue , [ 0 , 0 ,  50 , 50]  )   ;
Screen('FillRect',window, black , [ 10 , 10 ,  50 , 50]  )   ;
% Up Right
Screen('FillRect',window, blue , [ rect(3)-50 , 0 ,  rect(3) , 50]  )   ;
Screen('FillRect',window, black , [ rect(3)-50 , 10 ,  rect(3)-10 , 50 ]  )   ;
% Down Left
Screen('FillRect',window, blue , [ 0 , rect(4)-50 ,  50 , rect(4)]  )   ;
Screen('FillRect',window, black , [ 10 , rect(4)-50 ,  50 , rect(4)-10]  )   ;
% Down Right
Screen('FillRect',window, blue , [ rect(3)-50 , rect(4)-50 ,  rect(3) , rect(4)]  )   ;
Screen('FillRect',window, black , [ rect(3)-50 , rect(4)-50 ,  rect(3)-10 , rect(4)-10]  )   ;
% Up 
Screen('FillRect',window, blue , [ (round(rect(3)/2)-25) , 0 ,  (round(rect(3)/2)+25) , 10 ]  )   ;
Screen('FillRect',window, white , [ (round(rect(3)/2)-2) , 0 ,  (round(rect(3)/2)+2) , 10 ]  )   ;
% Down
Screen('FillRect',window, blue , [ (round(rect(3)/2)-25) , rect(4)-10 ,  (round(rect(3)/2)+25) , rect(4) ]  )   ;
Screen('FillRect',window, white , [ (round(rect(3)/2)-2) , rect(4)-10 ,  (round(rect(3)/2)+2) , rect(4) ]  )   ;
% Left
Screen('FillRect',window, blue , [ 0 , (round(rect(4)/2)-25) ,  10 , (round(rect(4)/2)+25) ]  )   ;
% Right
Screen('FillRect',window, blue , [ rect(3)-10 , (round(rect(4)/2)-25) ,  rect(3) , (round(rect(4)/2)+25) ]  )   ;
% Center
dim_cross = 8  ;          % Larghezza della croce attentiva, in pixel
spex_cross = 3  ;         % Spessore linea della croce attentiva, in pixel
Screen('DrawLine', window ,  red , centroschermo(1) - dim_cross  ,  centroschermo(2) - dim_cross  ,   centroschermo(1) + dim_cross  ,   centroschermo(2) + dim_cross   ,  spex_cross  ) ;
Screen('DrawLine', window ,  red , centroschermo(1) + dim_cross  ,  centroschermo(2) - dim_cross  ,   centroschermo(1) - dim_cross  ,   centroschermo(2) + dim_cross   ,  spex_cross  ) ;
Screen('Flip', window);
%%Mouse clilck
        pmb = 0 ;
        while pmb == 0
            [Xmouse,Ymouse,buttons] = GetMouse()  ;
            if any(buttons)
                fprintf('Someone''s pressing a mouse button!\n');
                MouseClick = [clock,buttons,Xmouse,Ymouse]  ;
                pmb = 1 ;
            end
        end