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MacOS 8.1
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Win98
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DOS
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This file was processed as: Mailbox/MIME Entity
(archive/mbox).
| Confidence | Program | Detection | Match Type | Support
|
|---|
| 100%
| dexvert
| Mailbox/MIME Entity (archive/mbox)
| magic
| Supported |
| 100%
| dexvert
| Internet Message Format (text/imf)
| magic
| Supported |
| 1%
| dexvert
| Text File (text/txt)
| fallback
| Supported |
| 100%
| file
| Mailbox text, 1st line "From tgl@netcom.com Thu May 4 18:24:08 1995", ASCII text
| default
| |
| 100%
| TrID
| E-Mail message (Var. 2)
| default
| |
| 100%
| checkBytes
| Printable ASCII
| default
| |
| 100%
| perlTextCheck
| Likely Text (Perl)
| default
| |
| 100%
| siegfried
| x-fmt/111 Plain Text File
| default
| |
| 100%
| detectItEasy
| Format: plain text[LF]
| default (weak)
| |
| 100%
| xdgMime
| application/mbox
| default
|
|
hex view+--------+-------------------------+-------------------------+--------+--------+
|00000000| 46 72 6f 6d 20 74 67 6c | 40 6e 65 74 63 6f 6d 2e |From tgl|@netcom.|
|00000010| 63 6f 6d 20 54 68 75 20 | 4d 61 79 20 20 34 20 31 |com Thu |May 4 1|
|00000020| 38 3a 32 34 3a 30 38 20 | 31 39 39 35 0a 4e 65 77 |8:24:08 |1995.New|
|00000030| 73 67 72 6f 75 70 73 3a | 20 63 6f 6d 70 2e 67 72 |sgroups:| comp.gr|
|00000040| 61 70 68 69 63 73 2c 61 | 6c 74 2e 67 72 61 70 68 |aphics,a|lt.graph|
|00000050| 69 63 73 2e 70 69 78 75 | 74 69 6c 73 2c 61 6c 74 |ics.pixu|tils,alt|
|00000060| 2e 62 69 6e 61 72 69 65 | 73 2e 70 69 63 74 75 72 |.binarie|s.pictur|
|00000070| 65 73 2e 75 74 69 6c 69 | 74 69 65 73 2c 61 6c 74 |es.utili|ties,alt|
|00000080| 2e 62 69 6e 61 72 69 65 | 73 2e 70 69 63 74 75 72 |.binarie|s.pictur|
|00000090| 65 73 2e 64 2c 61 6c 74 | 2e 62 69 6e 61 72 69 65 |es.d,alt|.binarie|
|000000a0| 73 2e 70 69 63 74 75 72 | 65 73 2e 65 72 6f 74 69 |s.pictur|es.eroti|
|000000b0| 63 61 2e 64 2c 63 6f 6d | 70 2e 61 6e 73 77 65 72 |ca.d,com|p.answer|
|000000c0| 73 2c 61 6c 74 2e 61 6e | 73 77 65 72 73 2c 6e 65 |s,alt.an|swers,ne|
|000000d0| 77 73 2e 61 6e 73 77 65 | 72 73 0a 46 72 6f 6d 3a |ws.answe|rs.From:|
|000000e0| 20 74 67 6c 40 6e 65 74 | 63 6f 6d 2e 63 6f 6d 20 | tgl@net|com.com |
|000000f0| 28 54 6f 6d 20 4c 61 6e | 65 29 0a 53 75 62 6a 65 |(Tom Lan|e).Subje|
|00000100| 63 74 3a 20 4a 50 45 47 | 20 69 6d 61 67 65 20 63 |ct: JPEG| image c|
|00000110| 6f 6d 70 72 65 73 73 69 | 6f 6e 20 46 41 51 2c 20 |ompressi|on FAQ, |
|00000120| 70 61 72 74 20 31 2f 32 | 0a 46 6f 6c 6c 6f 77 75 |part 1/2|.Followu|
|00000130| 70 2d 54 6f 3a 20 63 6f | 6d 70 2e 67 72 61 70 68 |p-To: co|mp.graph|
|00000140| 69 63 73 0a 53 75 6d 6d | 61 72 79 3a 20 47 65 6e |ics.Summ|ary: Gen|
|00000150| 65 72 61 6c 20 71 75 65 | 73 74 69 6f 6e 73 20 61 |eral que|stions a|
|00000160| 6e 64 20 61 6e 73 77 65 | 72 73 20 61 62 6f 75 74 |nd answe|rs about|
|00000170| 20 4a 50 45 47 0a 4b 65 | 79 77 6f 72 64 73 3a 20 | JPEG.Ke|ywords: |
|00000180| 4a 50 45 47 2c 20 69 6d | 61 67 65 20 63 6f 6d 70 |JPEG, im|age comp|
|00000190| 72 65 73 73 69 6f 6e 2c | 20 46 41 51 2c 20 4a 50 |ression,| FAQ, JP|
|000001a0| 47 2c 20 4a 46 49 46 0a | 53 75 70 65 72 73 65 64 |G, JFIF.|Supersed|
|000001b0| 65 73 3a 20 3c 6a 70 65 | 67 2d 66 61 71 2d 70 31 |es: <jpe|g-faq-p1|
|000001c0| 5f 37 39 38 30 37 37 37 | 36 31 40 6e 65 74 63 6f |_7980777|61@netco|
|000001d0| 6d 2e 63 6f 6d 3e 0a 52 | 65 70 6c 79 2d 54 6f 3a |m.com>.R|eply-To:|
|000001e0| 20 6a 70 65 67 2d 69 6e | 66 6f 40 75 75 6e 65 74 | jpeg-in|fo@uunet|
|000001f0| 2e 75 75 2e 6e 65 74 0a | 4f 72 67 61 6e 69 7a 61 |.uu.net.|Organiza|
|00000200| 74 69 6f 6e 3a 20 49 6e | 64 65 70 65 6e 64 65 6e |tion: In|dependen|
|00000210| 74 20 4a 50 45 47 20 47 | 72 6f 75 70 0a 44 61 74 |t JPEG G|roup.Dat|
|00000220| 65 3a 20 53 75 6e 2c 20 | 33 30 20 41 70 72 20 31 |e: Sun, |30 Apr 1|
|00000230| 39 39 35 20 30 35 3a 30 | 33 3a 30 30 20 47 4d 54 |995 05:0|3:00 GMT|
|00000240| 0a 0a 41 72 63 68 69 76 | 65 2d 6e 61 6d 65 3a 20 |..Archiv|e-name: |
|00000250| 6a 70 65 67 2d 66 61 71 | 2f 70 61 72 74 31 0a 50 |jpeg-faq|/part1.P|
|00000260| 6f 73 74 69 6e 67 2d 46 | 72 65 71 75 65 6e 63 79 |osting-F|requency|
|00000270| 3a 20 65 76 65 72 79 20 | 31 34 20 64 61 79 73 0a |: every |14 days.|
|00000280| 4c 61 73 74 2d 6d 6f 64 | 69 66 69 65 64 3a 20 32 |Last-mod|ified: 2|
|00000290| 39 20 41 70 72 69 6c 20 | 31 39 39 35 0a 0a 54 68 |9 April |1995..Th|
|000002a0| 69 73 20 61 72 74 69 63 | 6c 65 20 61 6e 73 77 65 |is artic|le answe|
|000002b0| 72 73 20 46 72 65 71 75 | 65 6e 74 6c 79 20 41 73 |rs Frequ|ently As|
|000002c0| 6b 65 64 20 51 75 65 73 | 74 69 6f 6e 73 20 61 62 |ked Ques|tions ab|
|000002d0| 6f 75 74 20 4a 50 45 47 | 20 69 6d 61 67 65 20 63 |out JPEG| image c|
|000002e0| 6f 6d 70 72 65 73 73 69 | 6f 6e 2e 0a 54 68 69 73 |ompressi|on..This|
|000002f0| 20 69 73 20 70 61 72 74 | 20 31 2c 20 63 6f 76 65 | is part| 1, cove|
|00000300| 72 69 6e 67 20 67 65 6e | 65 72 61 6c 20 71 75 65 |ring gen|eral que|
|00000310| 73 74 69 6f 6e 73 20 61 | 6e 64 20 61 6e 73 77 65 |stions a|nd answe|
|00000320| 72 73 20 61 62 6f 75 74 | 20 4a 50 45 47 2e 20 20 |rs about| JPEG. |
|00000330| 50 61 72 74 20 32 0a 67 | 69 76 65 73 20 73 79 73 |Part 2.g|ives sys|
|00000340| 74 65 6d 2d 73 70 65 63 | 69 66 69 63 20 68 69 6e |tem-spec|ific hin|
|00000350| 74 73 20 61 6e 64 20 70 | 72 6f 67 72 61 6d 20 72 |ts and p|rogram r|
|00000360| 65 63 6f 6d 6d 65 6e 64 | 61 74 69 6f 6e 73 2e 20 |ecommend|ations. |
|00000370| 20 41 73 20 61 6c 77 61 | 79 73 2c 0a 73 75 67 67 | As alwa|ys,.sugg|
|00000380| 65 73 74 69 6f 6e 73 20 | 66 6f 72 20 69 6d 70 72 |estions |for impr|
|00000390| 6f 76 65 6d 65 6e 74 20 | 6f 66 20 74 68 69 73 20 |ovement |of this |
|000003a0| 46 41 51 20 61 72 65 20 | 77 65 6c 63 6f 6d 65 2e |FAQ are |welcome.|
|000003b0| 0a 0a 4e 65 77 20 73 69 | 6e 63 65 20 76 65 72 73 |..New si|nce vers|
|000003c0| 69 6f 6e 20 6f 66 20 35 | 20 4d 61 72 63 68 20 31 |ion of 5| March 1|
|000003d0| 39 39 35 3a 0a 20 20 2a | 20 4d 69 6e 6f 72 20 63 |995:. *| Minor c|
|000003e0| 6f 72 72 65 63 74 69 6f | 6e 73 2e 0a 0a 0a 54 68 |orrectio|ns....Th|
|000003f0| 69 73 20 61 72 74 69 63 | 6c 65 20 69 6e 63 6c 75 |is artic|le inclu|
|00000400| 64 65 73 20 74 68 65 20 | 66 6f 6c 6c 6f 77 69 6e |des the |followin|
|00000410| 67 20 73 65 63 74 69 6f | 6e 73 3a 0a 0a 42 61 73 |g sectio|ns:..Bas|
|00000420| 69 63 20 71 75 65 73 74 | 69 6f 6e 73 3a 0a 0a 5b |ic quest|ions:..[|
|00000430| 31 5d 20 57 68 61 74 20 | 69 73 20 4a 50 45 47 3f |1] What |is JPEG?|
|00000440| 0a 5b 32 5d 20 57 68 79 | 20 75 73 65 20 4a 50 45 |.[2] Why| use JPE|
|00000450| 47 3f 0a 5b 33 5d 20 57 | 68 65 6e 20 73 68 6f 75 |G?.[3] W|hen shou|
|00000460| 6c 64 20 49 20 75 73 65 | 20 4a 50 45 47 2c 20 61 |ld I use| JPEG, a|
|00000470| 6e 64 20 77 68 65 6e 20 | 73 68 6f 75 6c 64 20 49 |nd when |should I|
|00000480| 20 73 74 69 63 6b 20 77 | 69 74 68 20 47 49 46 3f | stick w|ith GIF?|
|00000490| 0a 5b 34 5d 20 48 6f 77 | 20 77 65 6c 6c 20 64 6f |.[4] How| well do|
|000004a0| 65 73 20 4a 50 45 47 20 | 63 6f 6d 70 72 65 73 73 |es JPEG |compress|
|000004b0| 20 69 6d 61 67 65 73 3f | 0a 5b 35 5d 20 57 68 61 | images?|.[5] Wha|
|000004c0| 74 20 61 72 65 20 67 6f | 6f 64 20 22 71 75 61 6c |t are go|od "qual|
|000004d0| 69 74 79 22 20 73 65 74 | 74 69 6e 67 73 20 66 6f |ity" set|tings fo|
|000004e0| 72 20 4a 50 45 47 3f 0a | 5b 36 5d 20 57 68 65 72 |r JPEG?.|[6] Wher|
|000004f0| 65 20 63 61 6e 20 49 20 | 67 65 74 20 4a 50 45 47 |e can I |get JPEG|
|00000500| 20 73 6f 66 74 77 61 72 | 65 3f 0a 5b 37 5d 20 48 | softwar|e?.[7] H|
|00000510| 6f 77 20 64 6f 20 49 20 | 76 69 65 77 20 4a 50 45 |ow do I |view JPE|
|00000520| 47 20 69 6d 61 67 65 73 | 20 70 6f 73 74 65 64 20 |G images| posted |
|00000530| 6f 6e 20 55 73 65 6e 65 | 74 3f 0a 0a 4d 6f 72 65 |on Usene|t?..More|
|00000540| 20 61 64 76 61 6e 63 65 | 64 20 71 75 65 73 74 69 | advance|d questi|
|00000550| 6f 6e 73 3a 0a 0a 5b 38 | 5d 20 57 68 61 74 20 69 |ons:..[8|] What i|
|00000560| 73 20 63 6f 6c 6f 72 20 | 71 75 61 6e 74 69 7a 61 |s color |quantiza|
|00000570| 74 69 6f 6e 3f 0a 5b 39 | 5d 20 57 68 61 74 20 61 |tion?.[9|] What a|
|00000580| 72 65 20 73 6f 6d 65 20 | 72 75 6c 65 73 20 6f 66 |re some |rules of|
|00000590| 20 74 68 75 6d 62 20 66 | 6f 72 20 63 6f 6e 76 65 | thumb f|or conve|
|000005a0| 72 74 69 6e 67 20 47 49 | 46 20 69 6d 61 67 65 73 |rting GI|F images|
|000005b0| 20 74 6f 20 4a 50 45 47 | 3f 0a 5b 31 30 5d 20 44 | to JPEG|?.[10] D|
|000005c0| 6f 65 73 20 6c 6f 73 73 | 20 61 63 63 75 6d 75 6c |oes loss| accumul|
|000005d0| 61 74 65 20 77 69 74 68 | 20 72 65 70 65 61 74 65 |ate with| repeate|
|000005e0| 64 20 63 6f 6d 70 72 65 | 73 73 69 6f 6e 2f 64 65 |d compre|ssion/de|
|000005f0| 63 6f 6d 70 72 65 73 73 | 69 6f 6e 3f 0a 5b 31 31 |compress|ion?.[11|
|00000600| 5d 20 57 68 61 74 20 69 | 73 20 70 72 6f 67 72 65 |] What i|s progre|
|00000610| 73 73 69 76 65 20 4a 50 | 45 47 3f 0a 5b 31 32 5d |ssive JP|EG?.[12]|
|00000620| 20 49 73 6e 27 74 20 74 | 68 65 72 65 20 61 20 6c | Isn't t|here a l|
|00000630| 6f 73 73 6c 65 73 73 20 | 4a 50 45 47 3f 0a 5b 31 |ossless |JPEG?.[1|
|00000640| 33 5d 20 57 68 79 20 61 | 6c 6c 20 74 68 65 20 61 |3] Why a|ll the a|
|00000650| 72 67 75 6d 65 6e 74 20 | 61 62 6f 75 74 20 66 69 |rgument |about fi|
|00000660| 6c 65 20 66 6f 72 6d 61 | 74 73 3f 0a 5b 31 34 5d |le forma|ts?.[14]|
|00000670| 20 48 6f 77 20 64 6f 20 | 49 20 72 65 63 6f 67 6e | How do |I recogn|
|00000680| 69 7a 65 20 77 68 69 63 | 68 20 66 69 6c 65 20 66 |ize whic|h file f|
|00000690| 6f 72 6d 61 74 20 49 20 | 68 61 76 65 2c 20 61 6e |ormat I |have, an|
|000006a0| 64 20 77 68 61 74 20 64 | 6f 20 49 20 64 6f 20 61 |d what d|o I do a|
|000006b0| 62 6f 75 74 20 69 74 3f | 0a 5b 31 35 5d 20 48 6f |bout it?|.[15] Ho|
|000006c0| 77 20 64 6f 65 73 20 4a | 50 45 47 20 77 6f 72 6b |w does J|PEG work|
|000006d0| 3f 0a 5b 31 36 5d 20 57 | 68 61 74 20 61 62 6f 75 |?.[16] W|hat abou|
|000006e0| 74 20 61 72 69 74 68 6d | 65 74 69 63 20 63 6f 64 |t arithm|etic cod|
|000006f0| 69 6e 67 3f 0a 5b 31 37 | 5d 20 43 6f 75 6c 64 20 |ing?.[17|] Could |
|00000700| 61 6e 20 46 50 55 20 73 | 70 65 65 64 20 75 70 20 |an FPU s|peed up |
|00000710| 4a 50 45 47 3f 20 20 48 | 6f 77 20 61 62 6f 75 74 |JPEG? H|ow about|
|00000720| 20 61 20 44 53 50 20 63 | 68 69 70 3f 0a 5b 31 38 | a DSP c|hip?.[18|
|00000730| 5d 20 49 73 6e 27 74 20 | 74 68 65 72 65 20 61 6e |] Isn't |there an|
|00000740| 20 4d 2d 4a 50 45 47 20 | 73 74 61 6e 64 61 72 64 | M-JPEG |standard|
|00000750| 20 66 6f 72 20 6d 6f 74 | 69 6f 6e 20 70 69 63 74 | for mot|ion pict|
|00000760| 75 72 65 73 3f 0a 0a 4d | 69 73 63 65 6c 6c 61 6e |ures?..M|iscellan|
|00000770| 65 6f 75 73 3a 0a 0a 5b | 31 39 5d 20 57 68 65 72 |eous:..[|19] Wher|
|00000780| 65 20 61 72 65 20 46 41 | 51 20 6c 69 73 74 73 20 |e are FA|Q lists |
|00000790| 61 72 63 68 69 76 65 64 | 3f 0a 0a 0a 54 68 69 73 |archived|?...This|
|000007a0| 20 61 72 74 69 63 6c 65 | 20 61 6e 64 20 69 74 73 | article| and its|
|000007b0| 20 63 6f 6d 70 61 6e 69 | 6f 6e 20 61 72 65 20 70 | compani|on are p|
|000007c0| 6f 73 74 65 64 20 65 76 | 65 72 79 20 32 20 77 65 |osted ev|ery 2 we|
|000007d0| 65 6b 73 2e 20 20 49 66 | 20 79 6f 75 20 63 61 6e |eks. If| you can|
|000007e0| 27 74 20 66 69 6e 64 0a | 70 61 72 74 20 32 2c 20 |'t find.|part 2, |
|000007f0| 79 6f 75 20 63 61 6e 20 | 67 65 74 20 69 74 20 66 |you can |get it f|
|00000800| 72 6f 6d 20 74 68 65 20 | 6e 65 77 73 2e 61 6e 73 |rom the |news.ans|
|00000810| 77 65 72 73 20 61 72 63 | 68 69 76 65 20 61 74 20 |wers arc|hive at |
|00000820| 72 74 66 6d 2e 6d 69 74 | 2e 65 64 75 0a 28 73 65 |rtfm.mit|.edu.(se|
|00000830| 65 20 22 5b 31 39 5d 20 | 57 68 65 72 65 20 61 72 |e "[19] |Where ar|
|00000840| 65 20 46 41 51 20 6c 69 | 73 74 73 20 61 72 63 68 |e FAQ li|sts arch|
|00000850| 69 76 65 64 3f 22 29 2e | 20 20 50 61 72 74 20 32 |ived?").| Part 2|
|00000860| 20 63 68 61 6e 67 65 73 | 20 76 65 72 79 20 66 72 | changes| very fr|
|00000870| 65 71 75 65 6e 74 6c 79 | 3b 0a 67 65 74 20 61 20 |equently|;.get a |
|00000880| 6e 65 77 20 63 6f 70 79 | 20 69 66 20 74 68 65 20 |new copy| if the |
|00000890| 6f 6e 65 20 79 6f 75 20 | 61 72 65 20 72 65 61 64 |one you |are read|
|000008a0| 69 6e 67 20 69 73 20 6d | 6f 72 65 20 74 68 61 6e |ing is m|ore than|
|000008b0| 20 61 20 63 6f 75 70 6c | 65 20 6d 6f 6e 74 68 73 | a coupl|e months|
|000008c0| 20 6f 6c 64 2e 0a 0a 2d | 2d 2d 2d 2d 2d 2d 2d 2d | old...-|--------|
|000008d0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|000008e0| 2d 2d 2d 2d 2d 0a 0a 53 | 75 62 6a 65 63 74 3a 20 |-----..S|ubject: |
|000008f0| 5b 31 5d 20 57 68 61 74 | 20 69 73 20 4a 50 45 47 |[1] What| is JPEG|
|00000900| 3f 0a 0a 4a 50 45 47 20 | 28 70 72 6f 6e 6f 75 6e |?..JPEG |(pronoun|
|00000910| 63 65 64 20 22 6a 61 79 | 2d 70 65 67 22 29 20 69 |ced "jay|-peg") i|
|00000920| 73 20 61 20 73 74 61 6e | 64 61 72 64 69 7a 65 64 |s a stan|dardized|
|00000930| 20 69 6d 61 67 65 20 63 | 6f 6d 70 72 65 73 73 69 | image c|ompressi|
|00000940| 6f 6e 20 6d 65 63 68 61 | 6e 69 73 6d 2e 0a 4a 50 |on mecha|nism..JP|
|00000950| 45 47 20 73 74 61 6e 64 | 73 20 66 6f 72 20 4a 6f |EG stand|s for Jo|
|00000960| 69 6e 74 20 50 68 6f 74 | 6f 67 72 61 70 68 69 63 |int Phot|ographic|
|00000970| 20 45 78 70 65 72 74 73 | 20 47 72 6f 75 70 2c 20 | Experts| Group, |
|00000980| 74 68 65 20 6f 72 69 67 | 69 6e 61 6c 20 6e 61 6d |the orig|inal nam|
|00000990| 65 20 6f 66 20 74 68 65 | 0a 63 6f 6d 6d 69 74 74 |e of the|.committ|
|000009a0| 65 65 20 74 68 61 74 20 | 77 72 6f 74 65 20 74 68 |ee that |wrote th|
|000009b0| 65 20 73 74 61 6e 64 61 | 72 64 2e 0a 0a 4a 50 45 |e standa|rd...JPE|
|000009c0| 47 20 69 73 20 64 65 73 | 69 67 6e 65 64 20 66 6f |G is des|igned fo|
|000009d0| 72 20 63 6f 6d 70 72 65 | 73 73 69 6e 67 20 65 69 |r compre|ssing ei|
|000009e0| 74 68 65 72 20 66 75 6c | 6c 2d 63 6f 6c 6f 72 20 |ther ful|l-color |
|000009f0| 6f 72 20 67 72 61 79 2d | 73 63 61 6c 65 20 69 6d |or gray-|scale im|
|00000a00| 61 67 65 73 0a 6f 66 20 | 6e 61 74 75 72 61 6c 2c |ages.of |natural,|
|00000a10| 20 72 65 61 6c 2d 77 6f | 72 6c 64 20 73 63 65 6e | real-wo|rld scen|
|00000a20| 65 73 2e 20 20 49 74 20 | 77 6f 72 6b 73 20 77 65 |es. It |works we|
|00000a30| 6c 6c 20 6f 6e 20 70 68 | 6f 74 6f 67 72 61 70 68 |ll on ph|otograph|
|00000a40| 73 2c 20 6e 61 74 75 72 | 61 6c 69 73 74 69 63 0a |s, natur|alistic.|
|00000a50| 61 72 74 77 6f 72 6b 2c | 20 61 6e 64 20 73 69 6d |artwork,| and sim|
|00000a60| 69 6c 61 72 20 6d 61 74 | 65 72 69 61 6c 3b 20 6e |ilar mat|erial; n|
|00000a70| 6f 74 20 73 6f 20 77 65 | 6c 6c 20 6f 6e 20 6c 65 |ot so we|ll on le|
|00000a80| 74 74 65 72 69 6e 67 2c | 20 73 69 6d 70 6c 65 20 |ttering,| simple |
|00000a90| 63 61 72 74 6f 6f 6e 73 | 2c 0a 6f 72 20 6c 69 6e |cartoons|,.or lin|
|00000aa0| 65 20 64 72 61 77 69 6e | 67 73 2e 20 20 4a 50 45 |e drawin|gs. JPE|
|00000ab0| 47 20 68 61 6e 64 6c 65 | 73 20 6f 6e 6c 79 20 73 |G handle|s only s|
|00000ac0| 74 69 6c 6c 20 69 6d 61 | 67 65 73 2c 20 62 75 74 |till ima|ges, but|
|00000ad0| 20 74 68 65 72 65 20 69 | 73 20 61 20 72 65 6c 61 | there i|s a rela|
|00000ae0| 74 65 64 0a 73 74 61 6e | 64 61 72 64 20 63 61 6c |ted.stan|dard cal|
|00000af0| 6c 65 64 20 4d 50 45 47 | 20 66 6f 72 20 6d 6f 74 |led MPEG| for mot|
|00000b00| 69 6f 6e 20 70 69 63 74 | 75 72 65 73 2e 0a 0a 4a |ion pict|ures...J|
|00000b10| 50 45 47 20 69 73 20 22 | 6c 6f 73 73 79 2c 22 20 |PEG is "|lossy," |
|00000b20| 6d 65 61 6e 69 6e 67 20 | 74 68 61 74 20 74 68 65 |meaning |that the|
|00000b30| 20 64 65 63 6f 6d 70 72 | 65 73 73 65 64 20 69 6d | decompr|essed im|
|00000b40| 61 67 65 20 69 73 6e 27 | 74 20 71 75 69 74 65 20 |age isn'|t quite |
|00000b50| 74 68 65 20 73 61 6d 65 | 20 61 73 0a 74 68 65 20 |the same| as.the |
|00000b60| 6f 6e 65 20 79 6f 75 20 | 73 74 61 72 74 65 64 20 |one you |started |
|00000b70| 77 69 74 68 2e 20 20 28 | 54 68 65 72 65 20 61 72 |with. (|There ar|
|00000b80| 65 20 6c 6f 73 73 6c 65 | 73 73 20 69 6d 61 67 65 |e lossle|ss image|
|00000b90| 20 63 6f 6d 70 72 65 73 | 73 69 6f 6e 20 61 6c 67 | compres|sion alg|
|00000ba0| 6f 72 69 74 68 6d 73 2c | 0a 62 75 74 20 4a 50 45 |orithms,|.but JPE|
|00000bb0| 47 20 61 63 68 69 65 76 | 65 73 20 6d 75 63 68 20 |G achiev|es much |
|00000bc0| 67 72 65 61 74 65 72 20 | 63 6f 6d 70 72 65 73 73 |greater |compress|
|00000bd0| 69 6f 6e 20 74 68 61 6e | 20 69 73 20 70 6f 73 73 |ion than| is poss|
|00000be0| 69 62 6c 65 20 77 69 74 | 68 20 6c 6f 73 73 6c 65 |ible wit|h lossle|
|00000bf0| 73 73 0a 6d 65 74 68 6f | 64 73 2e 29 20 20 4a 50 |ss.metho|ds.) JP|
|00000c00| 45 47 20 69 73 20 64 65 | 73 69 67 6e 65 64 20 74 |EG is de|signed t|
|00000c10| 6f 20 65 78 70 6c 6f 69 | 74 20 6b 6e 6f 77 6e 20 |o exploi|t known |
|00000c20| 6c 69 6d 69 74 61 74 69 | 6f 6e 73 20 6f 66 20 74 |limitati|ons of t|
|00000c30| 68 65 20 68 75 6d 61 6e | 20 65 79 65 2c 0a 6e 6f |he human| eye,.no|
|00000c40| 74 61 62 6c 79 20 74 68 | 65 20 66 61 63 74 20 74 |tably th|e fact t|
|00000c50| 68 61 74 20 73 6d 61 6c | 6c 20 63 6f 6c 6f 72 20 |hat smal|l color |
|00000c60| 63 68 61 6e 67 65 73 20 | 61 72 65 20 70 65 72 63 |changes |are perc|
|00000c70| 65 69 76 65 64 20 6c 65 | 73 73 20 61 63 63 75 72 |eived le|ss accur|
|00000c80| 61 74 65 6c 79 20 74 68 | 61 6e 0a 73 6d 61 6c 6c |ately th|an.small|
|00000c90| 20 63 68 61 6e 67 65 73 | 20 69 6e 20 62 72 69 67 | changes| in brig|
|00000ca0| 68 74 6e 65 73 73 2e 20 | 20 54 68 75 73 2c 20 4a |htness. | Thus, J|
|00000cb0| 50 45 47 20 69 73 20 69 | 6e 74 65 6e 64 65 64 20 |PEG is i|ntended |
|00000cc0| 66 6f 72 20 63 6f 6d 70 | 72 65 73 73 69 6e 67 20 |for comp|ressing |
|00000cd0| 69 6d 61 67 65 73 0a 74 | 68 61 74 20 77 69 6c 6c |images.t|hat will|
|00000ce0| 20 62 65 20 6c 6f 6f 6b | 65 64 20 61 74 20 62 79 | be look|ed at by|
|00000cf0| 20 68 75 6d 61 6e 73 2e | 20 20 49 66 20 79 6f 75 | humans.| If you|
|00000d00| 20 70 6c 61 6e 20 74 6f | 20 6d 61 63 68 69 6e 65 | plan to| machine|
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