Is the resolution of FLIR`s 640 cameras truly 640, or is is duplicated 320?

This question was made with reference to FLIR`s 640x512 OEM thermal imaging cameras being export-controlled.

The Quark2 640 – 30Hz and 60Hz – and Muon 640 – 50Hz and 60Hz – are ITAR regulated.

The Tau2 640 30Hz and 60Hz were reclassified as dual-use items by the U.S. government in August 2015. As a result of the reclassification, the Tau2 640 60Hz and 30Hz are now under the jurisdiction of the Department of Commerce, along with the Quark2 336, Muon 336, as well as all Tau2 336, 324, 168, 162, and 160 models.

FLIR offers 9 Hz versions that are exempt from ITAR and Commerce licensing (except to a small number of rogue nations such as North Korea, Iraq, Iran, and Libya).

The native resolution of a Tau2 640 or Quark2 640 is always 640x512, whether the video is analog or digital. For the Tau 320, Tau2 324, Tau2 336, and Quark2 336 models, the digital video output matches the array format, that is: 320x256; 324x256; or 336x256. The analog video output of these 320-class cameras (NTSC / PAL) is duplicated (replicated) in order to fill the video space. This is done by replicating each pixel in the X and Y direction, then fitting the resulting image into 640x480 (VGA) space for display on a monitor.

This answer, in the context of resolution, also applies to the legacy Photon 640 and legacy Photon 320 camera versions.

Muon video output is digital-only, either 640x512 or 336x256.

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