Changes between Initial Version and Version 1 of Ticket #1100


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Timestamp:
04/13/12 12:24:49 (8 years ago)
Author:
curtis
Comment:

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  • Ticket #1100

    • Property Type changed from defect to feature
    • Property Summary changed from Brightness and Contrast dialog issues 2 to Brightness and Contrast improvements
  • Ticket #1100 – Description

    initial v1  
    11In the imagej devel maling list Gabriel Landini noted the following issues with the Brightness/Contrast plugin: 
    22 
    3 1. I can't do anything else until I close the dialog. For example, IJ2 does 
    4 not report pixel the values under the cursor until the brightness dialog is 
    5 closed. Is that how it is planned to work? 
     31. I can't do anything else until I close the dialog. For example, IJ2 does not report pixel the values under the cursor until the brightness dialog is closed. Is that how it is planned to work? 
    64 
    752. Dialog needs "reset" and "apply" buttons. 
    86 
    9 3. Minimum and maximum return fractional values for an 8 bit LUT. Is that 
    10 right? 
     73. Minimum and maximum return fractional values for an 8 bit LUT. Is that right? 
    118 
    12 4. Are the Brightness and Contrast values (0-100?) the best scale resolution 
    13 to use?. I think that having 100 units controlling LUTs with 256 values at 
    14 least for 8 bit images will create unnecessary hassle (like the fractional 
    15 values mentioned above). I can't see any advantage on 0-100 vs 0-255 (but 
    16 maybe there is some reason?). 
     94. Are the Brightness and Contrast values (0-100?) the best scale resolution to use?. I think that having 100 units controlling LUTs with 256 values at least for 8 bit images will create unnecessary hassle (like the fractional values mentioned above). I can't see any advantage on 0-100 vs 0-255 (but maybe there is some reason?). 
    1710 
    18 5, Compare Contrast in IJ1 with IJ2. In IJ2 the contrast does not respect the 
    19 brightness, as (without any brightness tweaking) the contrast should narrow 
    20 the LUT to 127 or so. Currently IJ2 at 100 setting of contrast has a minimum 
    21 of 0 and a maximum of 4.67 (?). 
    22 I think contrast should control the width of the LUT from both sides, while 
    23 keeping it centred. Currently it affects the max value and as a consequence it 
    24 changes both the width and the position of the lut. So "Contrast" behaves same 
    25 the "Maximum" slider of IJ1, 
     115. Compare Contrast in IJ1 with IJ2. In IJ2 the contrast does not respect the brightness, as (without any brightness tweaking) the contrast should narrow the LUT to 127 or so. Currently IJ2 at 100 setting of contrast has a minimum of 0 and a maximum of 4.67 (?). I think contrast should control the width of the LUT from both sides, while keeping it centred. Currently it affects the max value and as a consequence it changes both the width and the position of the lut. So "Contrast" behaves same the "Maximum" slider of IJ1. 
    2612 
    27 6. Maybe Maximum and Minimum would be more useful having sliders too instead 
    28 of number boxes. 
     136. Maybe Maximum and Minimum would be more useful having sliders too instead of number boxes.