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Showing results for tags 'afp-2542'.
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CONTEXT: I improve B&W pictures of text scanned from old books. I need to use the "Level adjustment" to make the background cleaner (whiter). The pictures are in files that I process successively. BUG DESCRIPTION: frequently, when I open the level adjustement subwindow of the Adjustement panel, the "level curve/spectrum" top of the subwindow is not updated. I see the curve, together with the vertical lines of the level slide bar(s), associated with the image that has been previoulsy processed; the black and white % of the slide bars are 0 and 100% as expected, however. I can change the white or black level of the image (input or output) using the slide bar(s) and the image is affected as expected. BUT THE vertical line showing the selected % within the spectrum does not move accordingly: the spectrum remains frozen on the previous image processing. PROBLEM: I need to see the successive minima and maxima of the curve/spectrum, and the vertical lines in order to adjust the required white (or black) level, but this is impossible because the curve and vertical lines are not updated FURTHER OBSERVATIONS: At random (frequence not reproducible), the "level curve/spectrum" updates upon opening of the subwindow : this is observed by the transient appearance of the curve associated with the previous image, which is soon (less than 1 second) replaced by the new curve corresponding to the image under processing. The vertical line(s) are at the edges of the spectrum as expected. When the bug appears at one image, it is impossible to avoid it by "deleting" the level adjustement and re-initiating a new level adjustement. Quiting and restarting Photo solves the problem… until some subsequent image is processed, and for which the bug reappears. NB: I suddenly realize that I never tried to save and then close the image, and to reopen it within the same "Photo" sesion… SYSTEM: OSX 13.0.1, Processor Apple M1; Affinity Photo 2.0.0. Sorry for my "Frenglish"…
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This seems to happen randomly. Sometimes the graph showing the levels shows, sometimes not, sometimes does not appear immediately, and then pops up. Very frustrating.