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         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/20ed9cbeb964eafd1c03a7a15e7023033/thomasrichter",         
         "tags" : [
            "Annealing,","Distortion","JPEG","Quantization,","Rate","Simulated","Theory,","Variable","XR,","coding,","compression,","data","distortion","image","optimisation,","quantisation","rate","theory,","vector"
         ],
         
         "intraHash" : "0ed9cbeb964eafd1c03a7a15e7023033",
         "interHash" : "f8ff101d1065b16a8b19dce9bdb0c1b3",
         "label" : "Spatial Constant Quantization in JPEG XR is Nearly Optimal",
         "user" : "thomasrichter",
         "description" : "",
         "date" : "2016-03-10 09:18:49",
         "changeDate" : "2016-03-10 08:20:00",
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         "pub-type": "inproceedings",
         "booktitle": "Data Compression Conference (DCC), 2010","address":"Snowbird, UT",
         "year": "2010", 
         "url": "http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5453436", 
         
         "author": [ 
            "Thomas Richter"
         ],
         "authors": [
         	
            	{"first" : "Thomas",	"last" : "Richter"}
         ],
         "pages": "79-88","abstract": "The JPEG XR image compression standard, originally developed under the name\nHD-Photo by Microsoft, offers the feature of spatial variably quantization;\nits codestream syntax allows to select one out of a limited set of possible\nquantizers per macro block and per frequency band. In this paper, an\nalgorithm is presented that finds the rate-distortion optimal set of quantizers,\nand the optimal quantizer choice for each macro block. Even though it\nseems plausible that this feature may provide a huge improvement for images\nwhose statistics is non-stationary, e.g. compound images, it is demonstrated that\nthe PSNR improvement is not larger than 0.3dB for a two-step heuristics\nof feasible complexity, but improvements of up to 0.8dB for\ncompound images are possible by a much more complex optimization strategy.",
         "issn" : "1068-0314",
         
         "isbn" : "978-1-4244-6425-8",
         
         "doi" : "10.1109/DCC.2010.14",
         
         "bibtexKey": "richter2010spatial"

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