RD Curve Data Format

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RD curves produced by rd_collect.sh and AreWeCompressedYet are text files with one data point per line, separated by spaces.

<quantizer> <number of pixels> <size in bytes> <psnr> <psnrhvs> <ssim> <fastssim>

Note that the units for all metric results are in dB. See the tools directory in the Daala source code for how they are calculated.