WordRider Text Editor for TI-89/92/TxtRider/Hibview/uView - import filters

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Import filters

WordRider supports variety of filters(algorithms) which you can get precise results when you create output 1bit bitmap images.

There are 4 kinds of filters:

• Uniform quantization(technical details)
  • Quantize filter
• Ordered dither(technical details)
  • Ordered filter 2x2
  • Ordered filter 3x3 #1
  • Ordered filter 3x3 #2
  • Ordered filter 4x4 #1
  • Ordered filter 4x4 #2
• Error diffusion(technical details)
  • Floyd-Steinberg filter
  • Jarvis filter
  • Shiau filter
  • Stucki filter
  • Burke filter
• Random dither(technical details)
  • Random filter

Every filter is suitable for different input image.
You have to choose which is suitable for your picture.

Appendix:Output from the TI-ScreenCapture software for a comparison.

Comparing filters

Input picture

Quantize filter

Ordered filter 2x2

Ordered filter 3x3 #1

Ordered filter 3x3 #2

Ordered filter 4x4 #1

Ordered filter 4x4 #2

Floyd-Steinberg filter

Jarvis filter

Shiau filter

Stucki filter

Burke filter

Random filter

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Output from the TI-ScreenCapture software

© Design by Siris 2004