Scaling of image (scriptable image processing system)

Question

I want to scale images to 400x400 (I am creating thumbnails). I am using the Scriptable Image Processing System (SIPS) in a Cocoa application, but the problem is poor efficiency. SIPS takes 70-90% CPU while converting 300 images in 20 seconds. Should I use the CIImage class (CIImage is the type required to use the various GPU-optimized Core Image filters) or NSImage class? Can anyone suggest a better method?

You should try them both and see what's fastest. – rob mayoff Nov 30 '11 at 07:39 — rob mayoff, Nov 30 '11 at 07:39

score 0 · Answer 1 · answered Dec 01 '11 at 09:33

0

A very simple and fast way to generate thumbnails on OS X is to use QLThumbnailImageCreate.
It's just one line of code so you can easily try out how it compares to SIPS & Core Image.

answered Dec 01 '11 at 09:33

Thomas Zoechling

34,177
3
81
112

Thank you for your suggestion. I am using sips because it is efficient then Core image and QLThumbnailImageCreate. – Parag Bafna Dec 02 '11 at 08:18

score 0 · Accepted Answer · answered Dec 02 '11 at 13:56

0

I tried thumbnail genration using NSImage , CIImage and sips. All are taking same CPU (70-90%) usage but sips is faster.

answered Dec 02 '11 at 13:56

Parag Bafna

22,812
8
71
144

Scaling of image (scriptable image processing system)

2 Answers2