JP2015195430A5 - - Google Patents
Download PDFInfo
- Publication number
- JP2015195430A5 JP2015195430A5 JP2014071105A JP2014071105A JP2015195430A5 JP 2015195430 A5 JP2015195430 A5 JP 2015195430A5 JP 2014071105 A JP2014071105 A JP 2014071105A JP 2014071105 A JP2014071105 A JP 2014071105A JP 2015195430 A5 JP2015195430 A5 JP 2015195430A5
- Authority
- JP
- Japan
- Prior art keywords
- bit reduction
- lossy compression
- compression processing
- processing unit
- error
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007906 compression Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
Description
その一方で、図6のロスレス圧縮をロッシー圧縮処理部62で利用すると、第1ブロックBL1内で右側に行くほど誤差が蓄積されていく、換言すれば第1ブロックBL1内で誤差が右側に拡散していく場合がある。 On the other hand, lossless compression of Figure 6 when used in the lossy compression processing section 62, has an error toward the right in the first block BL1 is stored rather, the error on the right side in the first block within BL1 other words It may spread.
図39に、ビット削減処理によって生成された圧縮データを復元した場合の数値例を示す。なお、復元処理では、5ビットから成る圧縮後の画素値に対して下位3ビットとして“000”を合成するものとする。また、図40に、圧縮前後の画像データの誤差を示す。図40によれば、誤差の絶対値の和は236となる。 Figure 39 shows a numerical example of restoring the compressed data generated by the bit reduction processing. In the restoration process, “000” is synthesized as the lower 3 bits of the compressed pixel value of 5 bits. FIG. 40 shows the error of the image data before and after compression. According to FIG. 40, the sum of absolute values of errors is 236.
なお、Cb成分およびCr成分に対しても、同様のビット削減処理を適用可能である。また、ビット削減処理を有するロッシー圧縮処理部62eを、他のロッシー圧縮処理部と組み合わせてもよい。また、ビット削減処理を各種処理(例えば図10〜図13を参照)と組み合わせることによって、別のロッシー圧縮処理部62を構成してもよい。
Incidentally, even for Cb and Cr components, it is possible to apply the same bit reduction process. Further, the lossy compression processing unit 62e having the bit reduction process may be combined with another lossy compression processing unit. Further, another lossy compression processing unit 62 may be configured by combining the bit reduction process with various processes (see, for example, FIGS. 10 to 13).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014071105A JP6310747B2 (en) | 2014-03-31 | 2014-03-31 | Data storage control device and data storage control method |
US14/659,828 US10225569B2 (en) | 2014-03-31 | 2015-03-17 | Data storage control apparatus and data storage control method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014071105A JP6310747B2 (en) | 2014-03-31 | 2014-03-31 | Data storage control device and data storage control method |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2015195430A JP2015195430A (en) | 2015-11-05 |
JP2015195430A5 true JP2015195430A5 (en) | 2017-03-30 |
JP6310747B2 JP6310747B2 (en) | 2018-04-11 |
Family
ID=54434135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014071105A Active JP6310747B2 (en) | 2014-03-31 | 2014-03-31 | Data storage control device and data storage control method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP6310747B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3734973B1 (en) * | 2019-05-02 | 2023-07-05 | Sick IVP AB | Method and encoder relating to encoding of pixel values to accomplish lossless compression of a digital image |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5847762A (en) * | 1995-12-27 | 1998-12-08 | Thomson Consumer Electronics, Inc. | MPEG system which decompresses and then recompresses MPEG video data before storing said recompressed MPEG video data into memory |
JP3330813B2 (en) * | 1996-03-25 | 2002-09-30 | 株式会社メガチップス | Image compression device and image decompression device |
JPH10191236A (en) * | 1996-12-25 | 1998-07-21 | Nec Corp | Image processor and image data memory arranging method |
JPH1155676A (en) * | 1997-08-07 | 1999-02-26 | Hitachi Ltd | Moving image data coder employing synchronization type memory |
JP2002171425A (en) * | 2000-11-30 | 2002-06-14 | Matsushita Electric Ind Co Ltd | Memory controller |
JP2002209111A (en) * | 2001-01-04 | 2002-07-26 | Mitsubishi Electric Corp | Image encoder, image communication system and program recording medium |
JP2002262102A (en) * | 2001-03-05 | 2002-09-13 | Matsushita Electric Ind Co Ltd | Image coder, image coding method, and its storage medium |
JP2003051952A (en) * | 2001-08-06 | 2003-02-21 | Fuji Xerox Co Ltd | Image processing apparatus |
JP4687216B2 (en) * | 2005-04-18 | 2011-05-25 | ソニー株式会社 | Image signal processing apparatus, camera system, and image signal processing method |
US7689047B2 (en) * | 2005-04-19 | 2010-03-30 | Samsung Electronics Co, Ltd. | Reduced buffer size for JPEG encoding |
JP2008004984A (en) * | 2006-06-20 | 2008-01-10 | Sony Corp | Image processor and method, program, and recording medium |
JP2010136264A (en) * | 2008-12-08 | 2010-06-17 | Panasonic Corp | Display data processor |
JP2012151690A (en) * | 2011-01-19 | 2012-08-09 | Hitachi Kokusai Electric Inc | Deblocking filter device, deblocking filter processing method, and encoding device and decoding device using the same |
JP5269151B2 (en) * | 2011-06-09 | 2013-08-21 | シャープ株式会社 | Semiconductor memory device |
JP6083973B2 (en) * | 2012-08-08 | 2017-02-22 | 株式会社メガチップス | Data storage control device and data storage method |
-
2014
- 2014-03-31 JP JP2014071105A patent/JP6310747B2/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2016526189A5 (en) | ||
JP2014078982A5 (en) | Apparatus and method for restoring compressed data | |
EP3674968A4 (en) | Image classifying method, server and computer readable storage medium | |
IN2013MU02340A (en) | ||
PH12019501501A1 (en) | Method and apparatus for verifying block data in a blockchain | |
WO2016057444A3 (en) | Improved palette coding for screen content coding | |
CN106575246A8 (en) | Machine learning is serviced | |
JP2016523468A5 (en) | ||
JP2017513343A5 (en) | ||
JP2015534779A5 (en) | ||
JP2014520282A5 (en) | ||
JP2016514426A5 (en) | ||
JP2016539537A5 (en) | ||
JP2020530172A5 (en) | ||
JP2018180759A5 (en) | ||
JP2016515260A5 (en) | ||
BR112021006522A2 (en) | method and apparatus for intraprediction using an interpolation filter | |
EP3716627A4 (en) | Video encoding method, computer apparatus, and storage medium | |
EP3902257A4 (en) | Coding prediction method and apparatus, and computer storage medium | |
WO2012106416A8 (en) | Method and apparatus for compressive sensing of sparse signals with reduced compression complexity | |
EP3748966A4 (en) | Video coding method, computer device, and storage medium | |
EP3699756A4 (en) | Application program starting method and starting apparatus, and computer readable storage medium | |
MY190014A (en) | Data compression | |
EP4044546A4 (en) | Message processing method, device and apparatus as well as computer readable storage medium | |
MY198404A (en) | Communication apparatus, control method, and computer readable storage medium |