Shari Academy Blog

Dec16

Method 1: Automatic options:

Try the automatic options to see how the computer automatically brings out the contrast in the image.
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Fig 1: original image with very limited contrast.

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Fig 2: path to open Auto Levels. (cmd+shift+L on mac & ctl+shift+L on a pc)

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Fig 3: result for Auto levels.

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Fig 4: Path to open Auto contrast. (cmd+shift+alt+L on a mac & ctl+shift+alt+L on a pc)

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Fig 5: result for auto contrast.

Method 2: Levels:

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Fig 1: original image with very limited contrast

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Fig 2: open the Levels dialogue box(Cmd/Ctl+L on mac and pc respectively)

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Fig 3: unadjusted sliders.

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Fig 4: This figure has a lot of whites, black and gray areas with detail. To bring out the contrast, move the black slider on the right to bring more blacks. Move the gamma or the gray slider to the left too to enhance the grays. Moving the white slider to the left will increase the whites. You can make the necessary changes on any of you images in a similar manner to get the desired contrast.

Method 3:Overlay:

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Fig 1: original image with very limited contrast

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Fig 2: Duplicate the Background layer, either by dragging it to the new layer icon at the bottom of the layer pallete, or by selecting Layer>New> Duplicate Layer

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Fig 3: Now change the layers blend mode from Normal to Overlay

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