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  1. N

    X-Rite Color Checker Passport

    i bought X-Rite Color Checker Passport and saw it's tutorial https://www.youtube.com/watch?v=5d5xSdin2GM what are the correct steps to get the best colors of my photo with this tool (i'm not talking about monitor calibration-that's another topic) 1-take a RAW/NEF photo with color checker 2-save...
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    precise Lab color color picker

    by using this jsx script my color is set to Lab values: 61,29 ; 0,93 ; 9, 28 after calculations you mentioned above i should get Lab 16 bit values: L16 20048,81 a16 -32,27 b16 837,21 but color sampler in photoshop says this: what's wrong? #target photoshop; var colour = new...
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    precise Lab color color picker

    so for b -0,2343 it should be -0,2343*128=-32.27
  4. N

    precise Lab color color picker

    -so I open RAW/NEF photo in photoshop -Camera Raw windows I choose ProPhoto RGB 16bits with my camera correct color profile. -i use color sampler to select color. -how to convert those values into Lab small values ex: 61,12 ; -0,43 ; 30,32
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    precise Lab color color picker

    is there any software to read colors of the photo with info panel or color picker witch such details: L:61,18411 ; a:−0,25212 ; b=6,54342 photoshop is not precise, can't such plugin for imagej either.
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    macro label image

    i have a macro that selects color ranges and fills it with some color (16 colors - one by one). is there any way to add text label over the part of the image where it is filled?
  7. N

    Tooth Color Analysis Methods

    Original: Method 1: -Convert to Lab mode -Added a 50% gray level Layer above the original and set blend to Luminosity (this is to isolate the colors) -Added a curves adjustment Layer and use the Auto function only on the "a" and "b" channels -Added a posterization adjustment Layer and in this...
  8. N

    Polarization Filter?

    Dear John i've already bought polarization filter. i will post results here today or tomorrow, but please tell me should i use this filter with our without ring flash? i was using ring flash to see more details of the tooth structure.
  9. N

    Polarization Filter?

    thanks John, it works, I was able to create such action and got the same result but how do you make a 50 % gray layer? i also wonder which method is better. i can also trace an image in adobe illustrator and depending on number of colors i get such results:
  10. N

    Polarization Filter?

    here is a high quality tooth image.http://pawellabno.pl/tooth.nef
  11. N

    cross polarization filter

    is there any way to see more details on such tooth photo? there is a special polarization glass you can buy and place between tooth and digital camera while taking a photo, but i wonder if it is possible with a photo taken a typical way.
  12. N

    Polarization Filter?

    no, it is a completely different question. we were talking about color matching. now i'm looking for a way to differ yellow color from blue .
  13. N

    Polarization Filter?

    one company sells such polarization filter for dentistry to better see colors. what adjustments should i play with to achieve similar result? to better see dentin/enamel difference (dentin is yellow ; enamel is blue)
  14. N

    liquid color areas

    i found a solution with Adobe Illustrator->Image Trace the only problem is that it colors the image with some color schema and I don't know how to make it ALWAYS use some color to colorize another color.
  15. N

    liquid color areas

    some time age i've created an action to colorize some areas of the picture by using color range: https://www.photoshopgurus.com/forum/general-photoshop-board/54310-color-elements-post1533712158.html#post1533712158 but how can i achieve such "liquid" areas?
  16. N

    White balance of white, black and gray

    hello, i set the white balance with my gray card but to have better results i take a photo with my white card, black card and gray card. now...how can i correct the white balance by using all of them. do i need only gray card or i should use lightroom or photoshop to correct that?
  17. N

    gray card in shader

    i have a shader like on the picture: i'd like to add one more gray shader so every time i take a photo with gray card and adjust the curves, all other colors will match. but i don't know the relation of gray card to colors in my shader. how can i find it out? should i photograph this picture on...
  18. N

    developing correct colors

    i have a photo of a tooth with gray card and one of shades (A3 on the image): https://drive.google.com/file/d/0ByRgd8_Fg3FkNXkxM0FMRkpzV00/view?usp=sharing and image with colors: https://drive.google.com/file/d/0ByRgd8_Fg3FkUmtEY0xDUVpPOE0/view?usp=sharing i've created an action that takes...
  19. N

    color range preview (in color)

    when i select some color during color range selection a new windows opens and i can see selection as black white and increase or descrease selection precision. how can i see it directly on the color image and change it there?
  20. N

    white balance calibration

    i know how to adjust the curves so gray on the photo with a tooth will become the same gray as on the picture with shades. but should i photograph also white and black card or for example some green color to have most precise color matching between pictures?
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