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Revision 1.432 by greg, Tue Nov 21 19:22:38 2023 UTC vs.
Revision 1.465 by greg, Fri Oct 4 18:49:06 2024 UTC

# Line 2633 | Line 2633 | that made reds into blues and vice versa, which has be
2633  
2634   Added i/o for spectral pictures to rmtxop, the first program that can
2635   ingest them.  (Only rtrace, rcontrib, and rfluxmtx can render them.)
2636 < Also added spectral picture support to rcrop and radcompare.
2636 > New symbolic rmtxop -c options, such as RGB, XYZ, S (for scotopic)
2637 > and M (for melanopic) make color conversions simpler.  Alternatively,
2638 > a reference matrix or picture may be given and the color space of
2639 > that file will be used.  The -C option takes either a symbolic
2640 > color space or reference file and is "sticky," so it applies to
2641 > all subsequent input files that do not have their own -c right ahead
2642 > of them.
2643 >
2644 > Added spectral picture support to rcrop and radcompare.
2645 >
2646 > Added new utility, rcomb, which is something like a combination
2647 > of rmtxop and pcomb, it works with all the inputs and
2648 > outputs that rmtxop handles, but allows for general expressions
2649 > like those in pcomb for putting matrices together, working on
2650 > an element at a time.  (No resizing of matrices or accessing
2651 > neighboring elements, as permitted in pcomb.)  It saves memory
2652 > over rmtxop by operating on a row at a time, so can handle
2653 > input and output matrices with any number of rows.  It does
2654 > provide for a single matrix-multiplication operation at the end,
2655 > which only requires memory for that final matrix.
2656 >
2657 > Added support for filtering hyperspectral images to pfilt.
2658 >
2659 > Added support for 1- and 3-component float matrix i/o to
2660 > pcomb to allow for better interoperability.
2661 >
2662 > Added support for -co+ option to rtpict, so it can directly
2663 > produce hyperspectral images.
2664 >
2665 > Added new "specdata" and "specpict" primitives to support
2666 > interpolated spectral data files and hyperspectral images
2667 > as patterns.
2668 >
2669 > Added support for multispectal sampling in rsensor, which will
2670 > put out as many color channels as specified in any -cs option
2671 > (default is 3 for RGB).
2672 >
2673 > Added ability of mgf2rad to convert spectral data at least
2674 > for light, glow, plastic, and metal primitive types.  Need
2675 > to use new '-s' option to get new output.
2676 >
2677 > Added handling of spectral images to rcode2bmp script.
2678 >
2679 > Minor change to rcollate to allow explicit byte records to
2680 > be any specified length without checks against header input.
2681 >
2682 > Added new hemisphere type to rfluxmtx, "h=cie" for CIE sky
2683 > scanner positions.  These are 145 patches with identical
2684 > row counts to Tregenza, but starting from a different
2685 > azimuth and reversing row directions at adjacent altitudes.
2686 >
2687 > Added optimization for long argument lists and arrays in
2688 > the calcomp routines used for rendering and in rcalc, etc.
2689 >
2690 > Added error estimate spreading to ambient super-sampling
2691 > algorithm (-as) to improve performance especially in
2692 > scenes with sharp cut-offs.
2693 >
2694 > Added -i option to gendaymtx to match -i option of gendaylit.
2695 > Thanks to Yongqing for initial implementation.
2696 >
2697 > Changed rcrop so negative #rows or #cols counts back from end.
2698 >
2699 > Added rcomb -n option for multi-processing of very large matrices.
2700 >
2701 > Made it so rsplit and rlam can handle any number of input files
2702 > up to active open file descriptor limit.
2703 >
2704 > Taoning Wang added genssky tool for generating spectral sky
2705 > descriptions.
2706 >
2707 > Taoning added gensdaymtx utility based on gendaymtx, and
2708 > added epw2wea -a option to include required information.
2709 >
2710 > Fixed bug introduced in Auguest 2022 (5.4 release) in distant
2711 > light source sampling, which caused aiming failures.  (Thanks
2712 > to Mike DiPompeo of LightStanza for reporting the issue.)
2713 >
2714 > Added rxpict rendering tool based on C++ RpictSimulManager class.
2715 > Multi-processing and spectral output are supported.
2716 >
2717 > Added crude ability to read and convert spectra to RGB in ximage,
2718 > ra_bmp, and ra_rgbe programs.  Also updated fast tone-mapping
2719 > library to handle spectral HSR inputs at the same time.  HSR
2720 > input handling was added in a similar fashion to pcond and pvalue.
2721 >
2722 > Wrote rxpiece tool that will render pictures using tiling and
2723 > can handle different output formats and hyperspectral pictures.
2724 > Only runs on a single machine, however -- now NFS locking on
2725 > shared volumes.  Mainly a demonstration tool for RpictSimulManager
2726 > C++ class, but may have its uses.
2727 >
2728 > Fixed a bug in BSDF sampling of sources pointed out by
2729 > David Geisler-Moroder, which tended to overestimate specular
2730 > contributions for some BSDFs.
2731 >
2732 > Added handling of hyperspectral pictures to pextrem, though
2733 > results are still reported in RGB.
2734 >
2735 > Added conversion of hyperspectral pictures to ra_xyze, although
2736 > it is even slower than rcomb for this process.  It is more
2737 > accurate than most of the other tools, at least.
2738 >
2739 > Added handling of hyperspectral images to normtiff, a little-used
2740 > but handy program for quickly tone-mapping pictures and TIFFs.
2741 >
2742 > Added conversion of hyperspectral pictures to ra_ps using
2743 > approximate color method.
2744 >
2745 > Added hyperspectral picture conversion to ra_tiff, with accurate
2746 > color when targeting 16-bit/comp. or LogLuv output, and approximate
2747 > method for 24-bit RGB.

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