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Test cases: |
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- text size: small / big |
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- bg type cases: color / shapes, i.e., |
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- white |
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- one color |
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- full texture |
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- grayscale texture (intensity scale "compressed" to a certain range) |
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General: |
General: |
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- 6 subjects do all releavant cases for each test |
- 6 subjects do all releavant cases for each test |
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- the order of the test cases is random for each subject |
- the order of the test cases is random for each subject |
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to componsate memory effects |
to componsate memory effects |
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Recognisability test (usefulness) |
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- objective: show that the background textures are useful |
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- means: show that fragments of documents can be recognized much |
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better when unique backgrounds are used |
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- buoy view testing XXX |
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Suppose that the first page of each of hundreds of documents is torn into |
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pieces and the pieces are put in a single container. |
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It is intuitively clear that the pieces can be identified and put |
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back together much more rapidly if each document has a unique |
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background texture as compared to, e.g., single background colors. |
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Another question is whether the extra features of the textures help |
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recognition as much if the fragments cannot be seen simultaneously |
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for comparing. |
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"Applicability"(better word?) test |
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---------------------------------- |
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- objective: show that the textures are better than single colors |
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- test cases: single color / full textures [ / grayscale textyres ] |
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- show 30 textures in series and then test recognisability with |
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30 new mixed in and shuffled with the 30 old, shown in series |
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XXX: small-scale fragments do lose shape features. |
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what to say about this |
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Readability test (non-disruptiveness) |
Readability test (non-disruptiveness) |
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- is the total of 2 * 6 subjects = 12 trials for each |
- is the total of 2 * 6 subjects = 12 trials for each |
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(font size, test case) pair enough to compensate the |
(font size, test case) pair enough to compensate the |
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memory effect and to obtain small enough variance? |
memory effect and to obtain small enough variance? |
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- how to scale the font? |
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should the background be scaled with it? |
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- what textures to use? |
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If we use unique textures for each text, they add extra |
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variation to the reading speed. |
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Recognizability test |
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-------------------- |
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- objective: show that textures can be remembered and that |
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they are better than single colors |
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- test cases: single color / full textures [ / grayscale textyres ] |
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- learning phase: show 30 textures in series, 5 seconds each |
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- recognition phase: |
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trials: 30 new textures mixed in and shuffled with the 30 old; |
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for each trial, the subject answers old/new |
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ISSUES: |
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- probably need some repetition to be able to memorize! |
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SCRATCH |
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======= |
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Test cases: |
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- text size: small / big |
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- bg type cases: color / shapes, i.e., |
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- white |
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- one color |
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- full texture |
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- grayscale texture (intensity scale "compressed" to a certain range) |
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XXX: small-scale fragments do lose shape features. |
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what to say about this |
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Recognisability test (usefulness) |
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--------------------------------- |
93 |
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- objective: show that the background textures are useful |
95 |
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- means: show that fragments of documents can be recognized much |
96 |
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better when unique backgrounds are used |
97 |
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- buoy view testing XXX |
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102 |
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Suppose that the first page of each of hundreds of documents is torn into |
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pieces and the pieces are put in a single container. |
105 |
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It is intuitively clear that the pieces can be identified and put |
106 |
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back together much more rapidly if each document has a unique |
107 |
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background texture as compared to, e.g., single background colors. |
108 |
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Another question is whether the extra features of the textures help |
110 |
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recognition as much if the fragments cannot be seen simultaneously |
111 |
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for comparing. |
112 |
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