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Q. How do I prepare an image for Tactile Image Production using Adobe Photoshop version 6?

A. Our original images were 96 dpi, sized to fit on screen. With originals of different sizes, you may have to adjust steps 1 and 2 to produce a 72 dpi image with a height and width that fit within 7.5” x 10”.

Some images may look better using three tones (black, white, midtone) rather than four tones (black, white, dark tone, light tone).

To adjust process for three tones for Grayscale image: adjust step 4 to 3 colors instead of 4 colors and skip steps 23-32.

To adjust process for three tones for Color images: adjust step 5 to 3 colors instead of 4 colors and skip steps 29-38.

To create vertical stripe pattern:

  1. Select File>New, 6 pixels by 6 pixels, grayscale, 72 dpi
  2. Use pencil to fill first three pixels in all three rows
  3. Select Select>All.
  4. Select Edit>Define Pattern

To create horizontal stripe pattern:

  1. Do steps A-C above
  2. Select Edit>Transform>Rotate 90 deg.
  3. Select Edit>Define Pattern

To Prepare Grayscale Image:

  1. Select File>Open.
  2. Select Image>Image Size and convert to 150 dpi resolution (with resampling)
  3. Select Image>Image Size and convert to 72 dpi (without resampling). If necessary, decrease height or width to within 7.5" x 10" to fit on 8.5 x 11 page.
  4. Select Image>Adjust>Posterize to 4 colors
  5. Select Select>Color Range and select all darkest color
  6. Select Select>Modify>Smooth and smooth selection by 3 pixels
  7. Select Layer>New>Layer and create a new layer called “Black”
  8. Select Edit>Fill and fill with black
  9. Select Select>Deselect
  10. In layer palette, click on background layer to make background layer active
  11. Select Select>Color Range and select all lightest color
  12. Select Edit>Fill and fill with white
  13. Select Select>Deselect
  14. Select Select>Color Range and select all light gray
  15. Select Select>Modify>Smooth and smooth selection by 3 pixels
  16. Select Layer>New>Layer and create new layer called “Light Gray”
  17. Select Edit>Stroke and stroke selection with black, 5 pixels wide, center
  18. Select Layer>New>Layer and create new layer called “Light Gray Fill”
  19. Select Edit>Fill and fill with vertical strip pattern
  20. In layer palette, move “Light Gray Fill” layer directly below “Light Gray” layer.
  21. In layer palette select “Light Gray” layer and from the layer palette menu select Merge Down
  22. Select Select>Deselect
  23. In layer palette, click on background layer to make background layer active
  24. Select Select>Color Range and select all dark gray
  25. Select Select>Modify>Smooth and smooth selection by 3 pixels
  26. Select Layer>New>Layer and create new layer called “Dark Gray”
  27. Select Edit>Stroke and stroke selection with black, 5 pixels wide, center
  28. Select Layer>New>Layer and create new layer called “Dark Gray Fill”
  29. Select Edit>Fill and fill with horizontal stripe pattern
  30. In layer palette, move “Dark Gray Fill” layer directly below “Dark Gray” layer
  31. In layer palette select “Dark Gray Layer” and from the layer palette menu select Merge Down
  32. Select Select>Deselect
  33. In layer palette, click on background layer to make background layer active
  34. Delete background layer
  35. Select Layer>Flatten Image
  36. Select black as the background color
  37. Select Image>Canvas Size and increase the height and width by 6 pixels
  38. Convert image to RGB mode
  39. Convert image to Indexed Color Mode, exact, 2 colors, forced black and white
  40. Select File>Save for Web and save as GIF, 2 colors, no dither.

To Prepare Color Image:

  1. Select File>Open
  2. Select Image>Image Size and convert to 150 dpi resolution (with resampling)
  3. Select Image>Image Size and convert to 72 dpi (without resampling). If necessary, decrease height or width to within 7.5" x 10" to fit on 8.5 x 11 page
  4. If needed, select Image>Adjust>Curves and adjust curves to increase contrast
  5. Select Image>Mode>Indexed Color, 4 colors, adaptive, no forced black and white, no diffusion, no transparency
  6. Select Image>Mode>RGB
  7. Select Select>Color Range and select the darkest color
  8. Select Edit>Fill and fill with black
  9. Select Select>Deselect
  10. Select Select>Color Range and select the lightest color
  11. Select Edit>Fill and fill with white
  12. Select Select>Deselect
  13. Select Image>Mode>Grayscale
  14. Select Select>Color Range and select black
  15. Select Select>Modify>Smooth and smooth selection by 3 pixels
  16. Select Layer>New>Layer and create a new layer called “Black”
  17. Select Edit>Fill and fill with black
  18. Select Select>Deselect
  19. In layer palette, click on background layer to make background layer active
  20. Select Select>Color Range and select light gray
  21. Select Select>Modify>Smooth and smooth selection by 3 pixels
  22. Select Layer>New>Layer and create new layer called “Light Gray”
  23. Select Edit>Stroke and stroke selection with black, 5 pixels wide, center
  24. Select Layer>New>Layer and create new layer called “Light Gray Fill”
  25. Select Edit>Fill and fill with vertical strip pattern
  26. In layer palette, move “Light Gray Fill” layer directly below “Light Gray” layer
  27. In layer palette select “Light Gray” layer and from the layer palette menu select Merge Down
  28. Select Select>Deselect
  29. In layer palette, click on background layer to make background layer active
  30. Select Select>Color Range and select all dark gray
  31. Select Select>Modify>Smooth and smooth selection by 3 pixels
  32. Select Layer>New>Layer and create new layer called “Dark Gray”
  33. Select Edit>Stroke and stroke selection with black, 5 pixels wide, center
  34. Select Layer>New>Layer and create new layer called “Dark Gray Fill”
  35. Select Edit>Fill and fill with horizontal strip pattern
  36. In layer palette, move “Dark Gray Fill” layer directly below “Dark Gray” layer
  37. In layer palette select “Dark Gray” layer and from the layer palette menu select Merge Down
  38. Select Select>Deselect
  39. In layer palette, click on background layer to make background layer active
  40. Delete background layer
  41. Select Layer>Flatten Image
  42. Select black as the background color
  43. Select Image>Canvas Size and increase the height and width by 6 pixels
  44. Convert image to RGB mode
  45. Convert image to Indexed Color Mode, local (adaptive), 2 colors, forced black and white
  46. Select File>Save for Web and save as GIF, 2 colors, no dither

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