Save cropit file3/26/2023 ![]() ![]() And there is no question that for color photos JPG's are the way to go. Relative to Web publishing, there really are just two common formats of images available to use: JPG and GIF (pronounced: jay-peg and giff). (Need to know more about TIFF format too, Google around and you'll find plenty.) Then work from this TIFF or make a copy of the TIFF and edit this copy - in the end saving your edited image as a brand new JPG - or perhaps some other image format - but we're mainly talking about JPG's here. So when you get a new image from a camera, a scan, a download from the Internet, wherever, if it happens to be a JPG, then before you crop it or do anything it should ideally be saved in the TIFF image format. So this "Rule" mentioned is really just suggesting that this practice of working from TIFF image format be cultivated into a good habit - because as you will read you can very easily ruin the images you value without understanding why. This path will in the end lead to image degradation that leads to the "fuzzy" image. However more often than not, as a JPG photo gets passed around, downloaded, handled over a couple years it can get re-edited numerous times, resized, cropped, etc. Now that this strong statement has been made a "Rule" to stress it, I can add that it's really not going to kill the image doing this once. ![]() The Golden Rule: when editing an existing image, do not edit a JPG AND then save it as a JPG even to simply crop the image and then save it - First save the JPG as a TIFF and work from this. More importantly you will hopefully take away some ideas that will help you make better quality JPG's and archival copies of your originals. Along the way toward this end you'll learn how this image compression method converts color photos into those smaller image files. This short write-up is to outline some information about JPG images and editing these image files optimally. You may also use the tee command in append mode with option -a in this manner: command | tee -a file.THL Toolbox > Images & Immersive Technologies > Technically Processing Images > Preventing Jpg Image DegradationĪ Basic Introduction to Preventing Jpg Image Degradation You can use it like this: command | tee file.txtĪgain, the file will be created automatically, if it doesn’t exist already. Like a tee pipe that sends water stream into two directions, the tee command send the output to the display as well as to a file (or as input to another command). Method 2: Use tee command to display the output and save it to a file as wellīy the way, did you notice that when you send the command output to a file, you cannot see it anymore on the display? The tee command in Linux solves this problem for you. Here, you are redirecting (>) standard error (2) to same address (&) as standard output (1). You can save both the command output and command error in the same file using 2>&1 like this:īasically, 0 stands for standard input, 1 for standard output and 2 for standard error. If your Linux command returns an error, it doesn’t get saved in the file. If you don’t want to lose the content of the existing file while saving the output of a script or command, use the redirection operation in append mode with >. And then later, it replaces the content of the file with the output of ls *.c command. It first saves the output of ls -l command. The example below demonstrates it better. If you use the > redirect again with the same file, the file content is replaced by the new output. If the file.txt doesn’t exist, it will be created automatically. Use the STDOUT redirection operator > for redirecting the output to a file like this: command > file.txt
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