Paulstretch can be manipulated with two parameters: stretch factor and time resolution. Stretch factor controls the pattern and complexity of the process, whereas time resolution equates to the size and appearance of the structures.
Overall, the process heavily effects images it is applied to, negating colour, structure and identifiable aspects in the high stretch factor values and giving only a glimpse of the original image in the low values. Interestingly, the file size is also dramatically increased when changing the stretch factor. This is due to data being multiplied and stretched, resulting in a longer waveform and therefore a larger file.
Time resolution does not significantly alter the file size, however it does alter legibility of the original image. To best view traces of the original image, a low stretch factor should be used in conjunction with a fairly large (from 20 to 60) time resolution. Too large a resolution and the shapes of the original image appear more abstract. For a high noise image, a combination of a high stretch factor and low resolution should be used. Care should also be taken not to use a stretch factor bellow 1.1, otherwise the file will shrink, resulting in an unreadable bitmap on export.
Stretch Factor: 10 Time Resolution (Seconds): 0.25
Stretch Factor: 10 Time Resolution (Seconds): 0.50
Stretch Factor: 10 Time Resolution (Seconds): 1
Stretch Factor: 10 Time Resolution (Seconds): 1.1
Stretch Factor: 7.9 Time Resolution (Seconds): 1
Stretch Factor: 8 Time Resolution (Seconds): 1
Stretch Factor: 9 Time Resolution (Seconds): 1
Stretch Factor: 4 Time Resolution (Seconds): 10
Stretch Factor: 4 Time Resolution (Seconds): 20
Stretch Factor: 4.1 Time Resolution (Seconds): 20
Stretch Factor: 1.1 Time Resolution (Seconds): 20
Stretch Factor: 1.1 Time Resolution (Seconds): 40
Stretch Factor: 1.1 Time Resolution (Seconds): 80
Stretch Factor: 1.1 Time Resolution (Seconds): 100
Stretch Factor: 10 Time Resolution (Seconds): 100
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