search for: 1ko

hello, I am actually indexing thousands of 1ko text documents using ferret and acts_as_ferret, and i face performance problems. I takes me hours to index 20 000 1ko text documents. Methology used : I create and object, fulfill it with the text, and save it. So it is automaticly indexed. Is there a way to make it faster ? ( remove the auto op...

Hello, With -l5 quality setting, I have learned that I can increase wavelet coeff threshold to 12 in the HH band without noticeable difference in the reconstructed images.With this processing, I win in average 1Ko in the compressed .nhw files, and so I can raise the quantization for -l1->-l4 settings (0.935->0.955,0.88->0.9,0.87->0.89) and so these settings are now better, there is a little less neatness/sharpness but there is more precision, and so these settings are quite competitive.The .nhw f...

Hello, I have improved quality for -l1->-l4 settings.I have properly set up the wavelet coeff threshold of the dead-zone according to the different wavelet subbands, I have then saved another 1Ko per .nhw files without noticeable difference and so I have raised again the quantization.The reconstructed images have now a better precision and still a good neatness. Update at: http://nhwcodec.blogspot.com/ Else I realize that JPEG XR (2009) and WebP (2011) are quite good codecs, they are back...

...9;s very few... )-: But really I am not kidding, you can test it by yourself and make your own opinion.I would be really very interested in any opinion on the NHW Project at high compression. Also, yes that's right, I think we can save 2KB in average per .nhw compressed file.I know how to save 1Ko on the wavelet DC image compression, I have explained it on the Theora forum in February 2015, iirc.To give an update, we can do smarter DC image splitting into different size blocks and give each block an appropriate coding mode (I have defined 4 modes for now, but just 1 mode is applied to the wh...

Hello, Just a quick message, I have improved the -l3 lower quality setting.I have increased the quantization to 0.8 and decrease a little the denoising, and so to save 1Ko in average, I have added a 8x8 block variance analysis.Blocks that have a low variance are averaged to save bits.The -l3 lower quality setting is a little better now. For the -h3 higher quality setting, yes for now I do not compress a small data packet (but same compression scheme as for the other...

Hello, Just a very quick message to let you know that I have added a higher quality setting (-h2, +10Ko) and I have added now residual coding on the 512x256 wavelet image for the higher settings.Precision is a little better.-I also still apply the post-processing function on the 512x256 wavelet image for now.- Here is the link for the binaries (as I can not link them in my blog for now):