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I understand that Jpeg compresses by throwing out pixels when you save a photo, and replacing them when you open. It replaces the pixels by guessing their color based on adjoining pixels. My questions are:
If you just open a pic to view without editing, will it always throw and replace the same pixel (lets say every 5th pixel) and therefore not add to the damage every time, or does it pic and choose the pixels randomly every time?
If it does replace the same pixel every time, would the degradation stop if all one does is adjust color, and only be and issue if one messes around with the placement of pixels, as in cropping etc?
I am new at this, so please forgive if I am an a totally wrong track.
Thank you in advance, you guys/gals have been great at clearing things up, and the existing posts have been a lot of help.
Hania
If you just open a pic to view without editing, will it always throw and replace the same pixel (lets say every 5th pixel) and therefore not add to the damage every time, or does it pic and choose the pixels randomly every time?
If it does replace the same pixel every time, would the degradation stop if all one does is adjust color, and only be and issue if one messes around with the placement of pixels, as in cropping etc?
I am new at this, so please forgive if I am an a totally wrong track.
Thank you in advance, you guys/gals have been great at clearing things up, and the existing posts have been a lot of help.
Hania
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