How do I create *.jp2-file with pre-made tiles
Posted: 2014-07-25T03:00:32-07:00
Hi. I have six image files I want to make a montage of. Each file is downloaded from the net is 1024x1024 pixels in size. They are named A1, A2, B1, B2, C1, C2, and I want the montage to look like this:
However, my original files are already JPEG-compressed, and I do not have the original files available. I don't want to lose quality when making the montage, so I want the output format to be something lossless. I know that I can use the command
to make a lossless png file. But the original jpeg's are a total of 632kB and the resulting png-file is 6MB, or 10 times as big.
I have heard that jpeg2000 are made from tiles, where each tile is compressed individually. Is there a way to stitch these six files together into one, while still retaining all the information in the originals (i.e. not re-encode the information) and keeping the file size at about 650kB?
Code: Select all
|--------|--------|
| A1.jpg | A2.jpg |
| | |
|--------|--------|
| B1.jpg | B2.jpg |
| | |
|--------|--------|
| C1.jpg | C2.jpg |
| | |
|--------|--------|
Code: Select all
montage `ls *.jpg | sort` -geometry +0+0 -tile 2x3 -border 0 -frame 0 "montage_geom.png"I have heard that jpeg2000 are made from tiles, where each tile is compressed individually. Is there a way to stitch these six files together into one, while still retaining all the information in the originals (i.e. not re-encode the information) and keeping the file size at about 650kB?