HOW TO OPEN A JP2 FILE SOFTWARE
HOW TO OPEN A JP2 FILE CODE

We named the tool jpylyzer (JP2-analyzer) and published a prototype on GitHub вЂ“ an online collaboration platform for software developers.

HOW TO OPEN A JP2 FILE CODE

'My first bit of code was a bit clumsy and unnecessarily lengthy in places, so my KB colleague RenГ© van der Ark volunteered to clean it up. Johan emphasizes that the development of a tool like this is not a one-man effort. Both the KB and the BL are partners in SCAPE. Johan: 'I decided it would be worth my while to spend more time on it.' This work fitted nicely within the framework of the European SCAPE project which had just begun and which focuses on issues of scale in digital preservation (SCAPE stands for SCAlable Preservation Environments). A lively online debate ensued about what the software should look like and how it could be developed.

We will definitely be testing this out.' And more was to come. It only took 45 minutes for Paul Wheatley of the British Library to reply: 'Excellent work, Johan. He ended his post on a modest note: 'I'm curious to hear if anyone finds useful at all.' He discovered a box-like structure which looked like it would be rather straightforward to check (the technical details are in his blog post announcing the first rudimentary software. Some odd afternoon вЂ“ or so he tells us вЂ“ Johan decided to have a look at the JP2 standard documentation. We want to be able to isolate those files, reliably and automatically, because manually checking millions of files is just not an option.' One can imagine that a minimal dip in the power supply, which might go entirely unnoticed, can damage hundreds or even thousands of files. 'We had already known that not all software produces valid JP2's, but this time the issue is about managing a large migration process. Obviously, something had to be done, because errors such as these can cause substantial problems, especially in the long term.' It even passed a 2 MB image which I had reduced to 4 KB. So I did some experimenting by deliberately damaging a few images. They had carried out some spot checks during digitization projects and had discovered that JHOVE passed corrupt files. But colleagues at the British Library in London had warned me that JHOVE did not work well. The most widely used tool to check the technical qualities of JP2 was JHOVE. I was asked to design part of the workflow for the migration, including some type of quality check. JP2 files are much smaller, so migrating the files would save storage space and money. Johan van der Knijff of the KB's Research Department: 'A few years ago the KB decided to migrate millions of older TIFF-files into JPEG-2000 (aka JP2).

How to open a jp2 file