STILL IMAGE CAPTURE STATISTICS AND FILE INDEX Copyright 1989,1990 Virginia Polytechnic Institute and State University All Rights Reserved. Source: Center of Architecture and Urban Studies Videodisc: VISUAL TEXT: HISTORY OF ARCHITECTURE Frame #1624--Parthenon (west front), Greek Classic Architecture VCAPT Settings: Contrast-59, Color-49, Tint-5 This image was captured on a Pro750 system from the above described videodisc, at various levels of filtering, with differing resolution, and with either 9 or 16 bits per pixel. The name of each file begins with form "take" since this was a "take" of the image. Next there is a number to identify a different case - each case is described in the table below. The suffix of each file is chosen from the following set, where the meaning is given for each. imy,imu,imv are for DVI 9-bit format i16 is for DVI 16-bit format cmy,cmu,cmv are for DVI compressed 9-bit format c16 is for DVI compressed 16-bit format The number of bytes shown in parenthesis on the right of some of the lines indicates the storage requirement for DVI 9-bit format. The first 36 takes were captured at 9-bits/pixel, and the remaining 36 were captured at 16-bits per pixel. All 72 were then converted to both 9-bit and 16-bit compressed forms which are in the archcomp directory. We hope this collection of images will help illustrate the space and quality that is achieved on the Pro750 system. Capture was done by Don Inman, and assistance was provided by Amjad Daoud, Antonio Siochi, Arun Narasimhan, and Prabhakar Koushik. The files are all Copyright 1989,1990 Virginia Polytechnic Institute and State University. All Rights Reserved. Still Image Compression Capture Statistics Frame #1624--Parthenon (west front), Greek Classic Architecture Source: Center of Architecture and Urban Studies Videodisc Visual Text: History of Architecture VCAPT Settings: Contrast-59, Color-49, Tint-5 Screen Resolution Screen Size File Size 9 bit (C9) 16 bit (C16) (Bytes) (Bytes) (Bytes) take1- filter: none, 64x60 9 bit--4500 2,600 4,800 take2- filter: fair, 64x60, 9 bit--4500 2,500 4,100 take3- filter: good, 64x60, 9 bit--4500 2,500 4,000 take4- filter: none, 128x120 9 bit--17,500 8,200 18,000 take5- filter: fair, 128x120 9 bit--17,500 8,000 14,000 take6- filter: good, 128x120 9 bit--17,500 8,000 15,000 take7- filter: none, 192x180 9 bit--39,000 17,000 35,000 take8- filter: fair, 192x180 9 bit--39,000 16,000 31,000 take9- filter: good, 192x180 9 bit--39,000 16,000 31,000 take10- filter: none, 256x240 9 bit--69,500 27,000 55,000 take11- filter: fair, 256x240 9 bit--69,500 27,000 52,000 take12- filter: good 256x240 9 bit--69,500 25,000 49,000 take13- filter: none, 320x300 9 bit--108,000 42,000 82,000 take14- filter: fair, 320x300 9 bit--108,000 42,000 78,000 take15- filter: good, 320x300 9 bit--108,000 41,000 76,000 take16- filter: none, 384x360 9 bit--156,000 59,000 114,000 take17- filter: fair, 384x360 9 bit--156,000 57,000 105,000 take18- filter: good, 384x360 9 bit--156,000 57,000 105,000 take19- filter: none, 448x420 9 bit--212,000 77,000 147,000 take20- filter: fair, 448x420 9 bit--212,000 75,000 138,000 take21- filter: good, 448x420 9 bit--212,000 75,000 134,000 take22- filter: none, 512x480 9 bit--275,000 97,000 186,000 take23- filter: fair, 512x480 9 bit--275,000 94,000 165,000 take24- filter: good, 512x480 9 bit--275,000 97,000 195,000 take25- filter: none, 576x360 9 bit--235,000 84,000 146,000 take26- filter: fair, 576x360 9 bit--235,000 82,000 133,000 take27- filter: good, 576x360 9 bit--235,000 81,000 131,000 take28- filter: none, 640x400 9 bit--288,000 101,000 173,000 take29- filter: fair, 640x400 9 bit--288,000 98,000 164,000 take30- filter: good, 640x400 9 bit--288,000 97,000 162,000 take31- filter: none, 704x480 9 bit--380,000 129,000 228,000 take32- filter: fair, 704x480 9 bit--380,000 128,000 228,000 take33- filter: good, 704x480 9 bit--380,000 127,000 224,000 take34- filter: none, 768x480 9 bit--415,000 138,000 240,000 take35- filter: fair, 768x480 9 bit--415,000 137,000 236,000 take36- filter: good, 768x480 9 bit--415,000 139,000 242,000 The following files are the still images of the Parthenon captured using 16 bits per pixel. Screen Resolution Screen Size File Size 9 bit (C9) 16 bit (C16) (Bytes) (Bytes) (Bytes) take37- filter: none, 64x60 16 bit--7700 2,600 7,400 take38- filter: fair, 64x60 16 bit--7700 2,500 5,300 take39- filter: good, 64x60 16 bit--7700 2,500 5,200 take40- filter: none, 128x120 16 bit--31,000 8,000 26,000 take41- filter: fair, 128x120 16 bit--31,000 8,000 19,000 take42- filter: good, 128x120 16 bit--31,000 8,000 18,000 take43- filter: none, 192x180 16 bit--69,000 16,000 52,000 take44- filter: fair, 192x180 16 bit--69,000 16,000 46,000 take45- filter: good, 192x180 16 bit--69,000 16,000 42,000 take46- filter: none, 256x240 16 bit--123,000 28,000 84,000 take47- filter: fair, 256x240 16 bit--123,000 28,000 74,000 take48- filter: good , 256x240 16 bit--123,000 27,000 65,000 take49- filter: none, 320x300 16 bit--192,000 42,000 121,000 take50- filter: fair, 320x300 16 bit--192,000 42,000 112,000 take51- filter: good, 320x300 16 bit--192,000 41,000 105,000 take52- filter: none, 384x360 16 bit--277,000 61,000 160,000 take53- filter: fair, 384x360 16 bit--277,000 58,000 150,000 take54- filter: good, 384x360 16 bit--277,000 59,000 169,000 take55- filter: none, 448x420 16 bit--376,000 81,000 197,000 take56- filter: fair, 448x420 16 bit--376,000 77,000 189,000 take57- filter: good, 448x420 16 bit--376,000 77,000 198,000 take58- filter: none, 512x480 16 bit--492,000 100,000 238,000 take59- filter: fair, 512x480 16 bit--492,000 97,000 232,000 take60- filter: good, 512x480 16 bit--492,000 99,000 269,000 take61- filter: none, 576x360 16 bit--415,000 86,000 187,000 take62- filter: fair, 576x360 16 bit--415,000 83,000 188,000 take63- filter: good, 576x360 16 bit--415,000 82,000 186,000 take64- filter: none, 640x400 16 bit--512,000 103,000 219,000 take65- filter: fair, 640x400 16 bit--512,000 100,000 224,000 take66- filter: good, 640x400 16 bit--512,000 99,000 245,000 take67- filter: none, 704x480 16 bit--676,000 132,000 274,000 take68- filter: fair, 704x480 16 bit--676,000 132,000 275,000 take69- filter: good, 704x480 16 bit--676,000 131,000 279,000 take70- filter: none, 768x480 16 bit--737,000 143,000 282,000 take71- filter: fair, 768x480 16 bit--737,000 141,000 300,000 take72- filter: good, 768x480 16 bit--737,000 145,000 356,000 The 9 bit compressed images and the 16 bit compressed images of the Parthenon are in the archcomp directory. The readme file in that directory gives the required information about the compressed images. Notes: * 9 bit image converted to c9 shows bad distortion at lower resolutions. * No clear difference between original 9 bit image converted to c16. * 16 bit image converted to c9 shows bad distortion at lower resolutions. * 16 bit image converted to c9 loses sharpness at higher resolutions. * No clear difference between original 16 bit image converted to c16.