ENGINEERING GUIDELINES. All work performed as part of this project shall conform to the most current edition of the Engineering Guidelines for Professional Engineering Services and Developments as approved by the City Engineer and on file in the office of the City Engineer.
ENGINEERING GUIDELINES. Engineering Guidelines represent well-defined, informative engineering principals. Engineering Guidelines are not mandated and are found in AEDP XXX. 5 Frame Rate Annotation STANAG 4609 uses the following scanning format nomenclature. 60p = 60 Frames Per Second (FPS), Progressively Scanned 60p/1.001 = 59.94 FPS (NTSC compatible frame rate), Progressively Scanned 50p = 50 FPS, Progressively Scanned 30p = 30 FPS, Progressively Scanned 30p/1.001 = 29.97 FPS (NTSC compatible frame rate), Progressively Scanned 25p = 25 FPS, Progressively Scanned 24p = 24 FPS, Progressively Scanned 24p/1.001 = 23.98 FPS (NTSC compatible frame rate), Progressively Scanned 30i = 30 FPS, Interlace Scanned, yielding 60 fields per second Note that many commercial documents use the term 60i to mean 30i. 30i/1.001 = 29.97 FPS (NTSC frame rate), Interlace Scanned Note this is the frame rate associated with “television” in the United States. 25i = 25 FPS, Interlace Scanned, yielding 50 fields per second Note this is the frame rate associated with “television” in Europe. 24i = 24 FPS, Interlace Scanned, yielding 48 fields per second 24i/1.001 = 23.98 FPS (NTSC compatible frame rate), Interlace Scanned 6 Standard, Enhanced, and High Definition STANAG 4609 uses the following consistent scanning format definitions, defined in the commercial world, throughout all of the specified profiles, (see Motion Imagery System Matrix for detailed technical specifications for each profile): High Definition (HD) is defined as spatial resolution at or greater than 1280x720 pixels, progressively scanned, at temporal rates at or greater than 24 Hz. Enhanced Definition (ED) is defined as spatial resolution of at least 720x480 pixels at 60 Hz or 720x576 pixels at 50 Hz, progressively scanned. Enhanced definition provides twice the scanning lines of standard definition outlined below. Standard Definition (SD) is defined as spatial resolutions at or below 720x576 pixels progressively scanned at temporal rates below 50 Hz, or any interlace scanned format at 720x576 or 720x480.
