lossless

Lossless JPEG Rotate (90/180/270 degrees) in Java?

Is there a Java library for rotating JPEG files (90/180/270 degrees) without quality degraded? ...

How do I seamlessly concatenate MP3 streams?

Hey, I'm working on a streaming server that will be capable of broadcasting targetted ads. Basically listeners hear the same music, but every, say, 30 minutes comes a block of ads and every listener has his/her own block. Implementing such streaming server poses various problems and this question is about one of them. The server will w...

Lossless PDF rotation

Hi everyone! is there a way to rotate a PDF 90 degrees losslessly, with Python or using the command line? I'm looking for a REAL rotation, not just adding a "/ROTATE 90" inside the PDF, because afterwards I have to send the PDF via Hylafax and it looks like that it ignores those commands. I tried with ImageMagick's convert but the qual...

Is cropping of jpeg images using the PIL lossless?

A simple questions really. If you crop a jpeg image using the Python Imaging Library, is the resulting image recompressed, or is it lossless? ...

Is it possible to perform a lossless rotation on a JPEG Image in PHP?

I need to rotate some existing JPG images. They have already lost some detail, but I now want to rotate them and lose no further detail. With a little research, it seems the only lossless Image rotation library for PHP is by using the jPegTran library. Are there any other options when it somes to doing lossless jpg rotation? Thanks! ...

Lossless Image Compression - Image Recovery Fault

Hello. My prof. gave me two programs written in C: a lossless compression and a decompression one. I have to implement the Integer Wavelet Transform (I was using the lifting scheme of Haar's function but I changed to the Daubechies 5/3 int-to-int later) to the code blocks to improve the compression ratio. Everything was going fine in th...