wabru Posted June 4, 2009 Author Share Posted June 4, 2009 Hello. I read old documents (genealogy) on a microfilm reader screen. When I take a picture the corners are darker than center, making reading difficult. How correct this? (I have thousand pictures). Exemple attached. Maybee a layer for darken the center, yhen a backlight? Thanks in advance. Sorry for my poor english, I am french speaking wabru Quote Link to comment Share on other sites More sharing options...
wabru Posted June 4, 2009 Share Posted June 4, 2009 Hello. I read old documents (genealogy) on a microfilm reader screen. When I take a picture the corners are darker than center, making reading difficult. How correct this? (I have thousand pictures). Exemple attached. Maybee a layer for darken the center, yhen a backlight? Thanks in advance. Sorry for my poor english, I am french speaking wabru Quote Link to comment Share on other sites More sharing options...
barkbark00 Posted June 4, 2009 Share Posted June 4, 2009 This is due to the way those screens are illuminated. The lamp is directly behind the screen, causing the center to be brighter than the edges. The image sensor on a camera amplifies this effect. The only way to correct this would be using some type of HDR processing using multiple exposures. Basically speaking, you would need to take 2 or more pictures using different IS0 or exposure settings and then use software to combine the best parts of each of the images. Wikipedia - Synthetic HDR images Quote Take responsibility for your own intelligence. 😉 -Rick Brewster Link to comment Share on other sites More sharing options...
barkbark00 Posted June 4, 2009 Share Posted June 4, 2009 This is due to the way those screens are illuminated. The lamp is directly behind the screen, causing the center to be brighter than the edges. The image sensor on a camera amplifies this effect. The only way to correct this would be using some type of HDR processing using multiple exposures. Basically speaking, you would need to take 2 or more pictures using different IS0 or exposure settings and then use software to combine the best parts of each of the images. Wikipedia - Synthetic HDR images Quote Take responsibility for your own intelligence. 😉 -Rick Brewster Link to comment Share on other sites More sharing options...
Ash Posted June 4, 2009 Share Posted June 4, 2009 This is a simple task, you do not need to take 2 or more pictures. I'll give you some hints. Layers' blending mode & Rick's Blending 2 images together tut. Attached is a quick job, better? Quote All creations Ash + Paint.NET [ Googlepage | deviantArt | Club PDN | PDN Fan ] Link to comment Share on other sites More sharing options...
Ash Posted June 4, 2009 Share Posted June 4, 2009 This is a simple task, you do not need to take 2 or more pictures. I'll give you some hints. Layers' blending mode & Rick's Blending 2 images together tut. Attached is a quick job, better? Quote All creations Ash + Paint.NET [ Googlepage | deviantArt | Club PDN | PDN Fan ] Link to comment Share on other sites More sharing options...
wabru Posted June 4, 2009 Author Share Posted June 4, 2009 I see the result : a work of genius! Unfortunately, I can't translate : "Rick's blending". My dictionary do'nt help me. Could you explain a little more? Thank you in advance Wabru Quote Link to comment Share on other sites More sharing options...
wabru Posted June 4, 2009 Author Share Posted June 4, 2009 I see the result : a work of genius! Unfortunately, I can't translate : "Rick's blending". My dictionary do'nt help me. Could you explain a little more? Thank you in advance Wabru Quote Link to comment Share on other sites More sharing options...
Benji2 Posted June 5, 2009 Share Posted June 5, 2009 Rick is a forum name. find his tutorial on how to blend 2 images together. Quote Link to comment Share on other sites More sharing options...
Benji2 Posted June 5, 2009 Share Posted June 5, 2009 Rick is a forum name. find his tutorial on how to blend 2 images together. Quote Link to comment Share on other sites More sharing options...
Ash Posted June 5, 2009 Share Posted June 5, 2009 viewtopic.php?f=35&t=26970 Rick = Rick Brewster = Paint.NET Lead Developer Quote All creations Ash + Paint.NET [ Googlepage | deviantArt | Club PDN | PDN Fan ] Link to comment Share on other sites More sharing options...
Ash Posted June 5, 2009 Share Posted June 5, 2009 viewtopic.php?f=35&t=26970 Rick = Rick Brewster = Paint.NET Lead Developer Quote All creations Ash + Paint.NET [ Googlepage | deviantArt | Club PDN | PDN Fan ] Link to comment Share on other sites More sharing options...
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