Suda is the Senior Java EE Developer at IDR Solutions, and specialises in XFA, Fonts, True-Type Fonts, application servers and conversions. He is a keen science-fiction fan in his spare time.
What is the JDeli Image Library? In order to handle complex image data in PDF files, we needed Java solutions to handle lots of different image formats. We started using ImageIO and JAI but found them less than ideal and we did not see a satisfactory alternative. So we wrote our own solutions. We initially…
As some of you maybe aware we launched a image decoding and encoding library called “JDeli” last year with 100% Java code. It arose from our frustration with the current state of support with other image libraries (especially ImageIO), which was holding back development of our core PDF and HTML5 products. So JDeli was released…
Image scaling options At IDR Solutions recently, I have been looking for ways to provide higher quality image quality when down-sampling images in Java. I stumbled across Lanczos3 and this gives really good results. So the purpose of this article is to introduce the algorithm and show the better results you can obtain. By default Java offers…
Java’s ImageIO package (built in) does not support Tiff file decoding. So either you need JAI plugin or other third party libraries to convert these files into buffered images. Support for Tiff images in both is not complete. The third party Java libraries support only a subset of the Tiff files. (example tiling, separated planar, jpeg…
As you may already know, PNG is a lossless image format which has comparatively larger file sizes when compared to JPEG. But often PNG is more popular for example because it also has Alpha support (you can add custom alpha support in JPEGs but it needs tweaks in JFIF and APP segments). So can we improve…
