This project is read-only.

nquant is not working for large size image

When i am trying to compress an image(12600 x 9000 x 24 BPP) then it is showing error of out of memory, and file size is approx 18 MB. Please give me some solution. I am waiting for your response.

Id #10 | Release: None | Updated: May 10, 2016 at 5:26 AM by Supriya05 | Created: May 10, 2016 at 5:26 AM by Supriya05

QuantizeImage uses up to 120 mb in memory

When i ran a small test on a 4 mb bitmap image, QuantizeImage function used up to 120 mb in memory. why is that ? how can it be fixed ? Thanks for this fast and easy to use library. UPDATE ...

Id #9 | Release: None | Updated: Nov 9, 2015 at 1:01 PM by CaptCrunch | Created: Aug 12, 2014 at 10:30 PM by HMVC


Is there a license associated with this project? It's easier to use it when there's an explicit open source license.

Id #8 | Release: None | Updated: Nov 29, 2013 at 4:50 PM by drewnoakes | Created: Nov 29, 2013 at 4:50 PM by drewnoakes

About BuildLookups() method

Hi, The BuildLookups() method consists in a loop that, for each cube, examines each combination of A, R, G, B values, and writes a value in the lookups.Tags[,,,] 4-indexes array. However, since...

Id #7 | Release: None | Updated: Aug 19, 2014 at 9:07 PM by dbremner | Created: Nov 28, 2013 at 9:06 AM by wil_

Handle Alpha gradations

I tried to test nQuant on this image: The results were not good (see attached image). The alpha channel presents discontinuities. If you check the resulting image in a editor tool, and disp...

Id #6 | Release: None | Updated: Dec 21, 2016 at 4:46 PM by SuchiJ | Created: Oct 25, 2013 at 9:31 AM by wil_

gray scale gradients are too abrupt

The algorithm is too abrupt on gray scale gradients. Is there any way to adjust the quality of the compression like you can with jpeg? Original image: nQaunt result:

Id #5 | Release: None | Updated: Jun 30, 2014 at 11:04 AM by GeertvanHorrik | Created: Aug 27, 2013 at 8:10 PM by JoeyBradshaw

Simple performance improvement

While performance profiling I found an easy adjustment to WuQuantizerBase.ProcessImagePixels that I wanted to pass along. The repeated calls to the result.Height and result.Width properties withi...

Id #4 | Release: None | Updated: Nov 29, 2013 at 10:18 PM by drewnoakes | Created: Aug 25, 2013 at 2:10 PM by bfarmer67

Value of '-141' is not valid for 'alpha'. 'alpha' should be greater than or equal to 0 and less than or equal to 255.

Exceptions on some images while optimizing. But this images can be easily loaded by Bitmap. So seems to be bug in optimizer. {System.ArgumentException: Value of '-141' is not valid for 'alpha'....

Id #3 | Release: None | Updated: Jun 24, 2017 at 12:03 AM by philjones_ca | Created: Apr 4, 2013 at 3:06 PM by hmvs

Change the number of colors

I would like to change the number of colors. Currently, the method only Quantizes to 256 colors, but it would be great if i could set this value as a parameter. Great work!!

Id #2 | Release: None | Updated: Nov 29, 2013 at 11:45 AM by drewnoakes | Created: Mar 20, 2012 at 2:25 PM by XNABaby

  • 1-9 of 9 Work Items
    • Previous
    • 1
    • Next
    • Showing
    • All
    • Work Items