Given the adaptation luminance, this function returns the threshold of visibility in cd per m^2 TVI means Threshold vs Intensity function This version

Mark the file as recently used.

Do we currently have a valid spec?

Convert string to wide string, assuming all symbols are ASCII

Acquire the writer lock.

Release the writer lock.

Yield the processor for the rest of the timeslice.

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Documentary sugar -- although the static ROI::All() function simply returns the results of the default ROI constructor, it makes it very clear when us

Constructor. Does not do any parsing or error checking. Make sure to call initialize() right after construction.

Don't double-add

Add the images

these were #define macros in the original kiss_fft

channel packet contains info on the image data