Questions about reducing a file's size by automated pattern recognition, and the resulting changes in image quality.

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2
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2answers
157 views

Compress large PDF files in Illustrator

I am an unexperienced Illustrator user, so please bear with me if my question is very stupid: I have a large PDF file (5 MB+) [1] which is generated from a large dataset. The amount of details in the ...
-1
votes
1answer
558 views

Purple text on dark background too blurry when uploading to facebook (saved as png)

I'm going nuts here. I'll try to be straight to the point. I'm using Photoshop CC and have this dark background image for a poster with some text info. Sentences in white, three infos in purple, ...
0
votes
0answers
24 views

Help with compression artifacts in DXT1 compression

I'm working on a project that requires DXT1 compression, which keeps resulting in things like this. Is there any avoiding this horrible compression outcome?
0
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0answers
25 views

Incorporating Rate Distortion Optimization in baseline JPEG Image Compression

I want to incorporate RDO in baseline JPEG implementation so that I will be able to achieve the desired bitrate using the algorithm. But the problem is the estimation of distortion without increasing ...
0
votes
0answers
203 views

How do you export a jpeg with a selective compression mask from Photoshop CC 2014?

In fireworks, I can select parts of an image to keep at a lower compression (85) when exporting, leaving the rest of the image to be compressed at the higher setting (60). I cannot find that option in ...
0
votes
0answers
145 views

How does Apple compress/deliver the razor sharp @2x images on its website in tiny file sizes?

I've always wondered how they compress them. They have massive 2800x800 pixel images on their landing page that are just 90KB. In general all the imagery on Apple.com is very high quality, yet the ...