Resizing Images
Do some file formats (gif,jpg,bmp,etc.) lend themselves better to resizing then others? I seem to have alot of problems trying to make images smaller without losing clarity. I have been using the resize/resample function in irfan view to attempt to do this. Mostly they are screen shots that I am trying to make smaller so they can appear in user manuals. I have used GIF and JPEG and there doesn't seem to be much difference in those. Any ideas.tips appreciated!
Slynky,
-> small amount should be too bad
Should read: "small amount shouldN'T be too bad"
Cheers!
-> small amount should be too bad
Should read: "small amount shouldN'T be too bad"
Cheers!
Assuming you are using these images for print, I think resolution makes more difference than format. Before resizing, try upping the resolution to at least 300, then resizing. You may want to sharpen afterwards too. (assuming you have photoshop)
But remember, its ALWAYS better to go big to small when resizing than it is to go small to big.
BongSoo
But remember, its ALWAYS better to go big to small when resizing than it is to go small to big.
BongSoo
Another thing that should be mentioned is that the application you are using to resize the image DOES make a difference. Different programs have different algorithms for resizing images, and some are clearly better than others.
Adobe Photoshop is obviously one very good program when it comes to resizing images. If you compare the results from several different programs, you should be able to notice some quality differences.
Adobe Photoshop is obviously one very good program when it comes to resizing images. If you compare the results from several different programs, you should be able to notice some quality differences.
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make sure you select the correct image quality level before saving.
there you should have a slide: "lowest" to "best"
go for best and check out the image quality now.
there you should have a slide: "lowest" to "best"
go for best and check out the image quality now.
When working with a typical screen capture (of around 72 DPI), I don't think you will have much different success with one format over another. BMP is the best to START with as it is the original image representation without any prior loss of quality due to image compression (as in JPG or GIF). Since JPG and GIF have already been compressed once (with who-knows-what-kind-of-qua
Not sure how much your are resizing but a small amount should be too bad...say, 10% reduction. If you start moving down to 50% and higher, I think it's hard for any program to do a successful interpolation. Let me give a drastic example. Let's say you have a sword (held at a diagnal) in an image and to show that sword, the image uses 200 pixels along one edge. BUT, now we shrink that image by a BUNCH. So much so that now the image only has 10 pixels to show the edge of a sword that used to be delineated with 200 pixels. I'm thinking that sword edge is going to be REAL jaggedy.
That's a drastic example but done to show what I mean. Everytime you shrink an image, pixels are discarded and the algorithm does its best to condense the remaining pixels to show the image the best it can. And not always successful.
Regards,
Slynky