An Efficient Lossless Compression Method Using Histogram Packing for HDR Images in OpenEXR Format. - Taku Odaka; Wannida Sae-Tang; Masaaki Fujiyoshi; Hiroyuki Kobayashi; Masahiro Iwahashi; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2014)