ipa: raspberrypi: Add a "scientific" tuning for the IMX477

Add a tuning file for the IMX477 more suited to scientific applications.
The key differences from the original tuning file are:

- Disable ALSC block completely
- Pure rec709 gamma curve, and no contrast enhance
- New CT curve and CCMs based on the illumination spectrum of a black body
radiator up to about 3600 K and the CIE illuminant D for higher color
temperatures.

Further details on the changes can be found at:
https://forums.raspberrypi.com/viewtopic.php?t=343449

All credit for these changes go to Dr. Rolf Henkel.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Rolf Henkel <cpixip@pixelcircus.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

2 files changed, 483 insertions, 0 deletions

diff --git a/src/ipa/raspberrypi/data/imx477_scientific.json b/src/ipa/raspberrypi/data/imx477_scientific.json
new file mode 100755
index 00000000..17c4ed0a
--- /dev/null
+++ b/src/ipa/raspberrypi/data/imx477_scientific.json
@@ -0,0 +1,482 @@
+{
+    "version": 2.0,
+    "target": "bcm2835",
+    "algorithms": [
+        {
+            "rpi.black_level":
+            {
+                "black_level": 4096
+            }
+        },
+        {
+            "rpi.dpc": { }
+        },
+        {
+            "rpi.lux":
+            {
+                "reference_shutter_speed": 27242,
+                "reference_gain": 1.0,
+                "reference_aperture": 1.0,
+                "reference_lux": 830,
+                "reference_Y": 17755
+            }
+        },
+        {
+            "rpi.noise":
+            {
+                "reference_constant": 0,
+                "reference_slope": 2.767
+            }
+        },
+        {
+            "rpi.geq":
+            {
+                "offset": 204,
+                "slope": 0.01078
+            }
+        },
+        {
+            "rpi.sdn": { }
+        },
+        {
+            "rpi.awb":
+            {
+                "priors": [
+                    {
+                        "lux": 0,
+                        "prior":
+                        [
+                            2000, 1.0,
+                            3000, 0.0,
+                            13000, 0.0
+                        ]
+                    },
+                    {
+                        "lux": 800,
+                        "prior":
+                        [
+                            2000, 0.0,
+                            6000, 2.0,
+                            13000, 2.0
+                        ]
+                    },
+                    {
+                        "lux": 1500,
+                        "prior":
+                        [
+                            2000, 0.0,
+                            4000, 1.0,
+                            6000, 6.0,
+                            6500, 7.0,
+                            7000, 1.0,
+                            13000, 1.0
+                        ]
+                    }
+                ],
+                "modes":
+                {
+                    "auto":
+                    {
+                        "lo": 2500,
+                        "hi": 8000
+                    },
+                    "incandescent":
+                    {
+                        "lo": 2500,
+                        "hi": 3000
+                    },
+                    "tungsten":
+                    {
+                        "lo": 3000,
+                        "hi": 3500
+                    },
+                    "fluorescent":
+                    {
+                        "lo": 4000,
+                        "hi": 4700
+                    },
+                    "indoor":
+                    {
+                        "lo": 3000,
+                        "hi": 5000
+                    },
+                    "daylight":
+                    {
+                        "lo": 5500,
+                        "hi": 6500
+                    },
+                    "cloudy":
+                    {
+                        "lo": 7000,
+                        "hi": 8600
+                    }
+                },
+                "bayes": 1,
+                "ct_curve":
+                [
+                    2000.0, 0.6331025775790707, 0.27424225990946915,
+                    2200.0, 0.5696117366212947, 0.3116091368689487,
+                    2400.0, 0.5204264653110015, 0.34892179554105873,
+                    2600.0, 0.48148675531667223, 0.38565229719076793,
+                    2800.0, 0.450085403501908, 0.42145684622485047,
+                    3000.0, 0.42436130159169017, 0.45611835670028816,
+                    3200.0, 0.40300023695527337, 0.48950766215198593,
+                    3400.0, 0.3850520052612984, 0.5215567075837261,
+                    3600.0, 0.36981508088230314, 0.5522397906415475,
+                    4100.0, 0.333468007836758, 0.5909770465167908,
+                    4600.0, 0.31196097364221376, 0.6515706327327178,
+                    5100.0, 0.2961860409294588, 0.7068178946570284,
+                    5600.0, 0.2842607232745885, 0.7564837749584288,
+                    6100.0, 0.2750265787051251, 0.8006183524920533,
+                    6600.0, 0.2677057225584924, 0.8398879225373039,
+                    7100.0, 0.2617955199757274, 0.8746456080032436,
+                    7600.0, 0.25693714288250125, 0.905569559506562,
+                    8100.0, 0.25287531441063316, 0.9331696750390895,
+                    8600.0, 0.24946601483331993, 0.9576820904825795
+                ],
+                "sensitivity_r": 1.05,
+                "sensitivity_b": 1.05,
+                "transverse_pos": 0.0238,
+                "transverse_neg": 0.04429,
+                "coarse_step": 0.1
+            }
+        },
+        {
+            "rpi.agc":
+            {
+                "metering_modes":
+                {
+                    "centre-weighted":
+                    {
+                        "weights": [ 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 0, 0, 0, 0 ]
+                    },
+                    "spot":
+                    {
+                        "weights": [ 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]
+                    },
+                    "matrix":
+                    {
+                        "weights": [ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
+                    }
+                },
+                "exposure_modes":
+                {
+                    "normal":
+                    {
+                        "shutter": [ 100, 10000, 30000, 60000, 66666 ],
+                        "gain": [ 1.0, 2.0, 4.0, 6.0, 8.0 ]
+                    },
+                    "short":
+                    {
+                        "shutter": [ 100, 5000, 10000, 20000, 33333 ],
+                        "gain": [ 1.0, 2.0, 4.0, 6.0, 8.0 ]
+                    },
+                    "long":
+                    {
+                        "shutter": [ 100, 10000, 30000, 60000, 120000 ],
+                        "gain": [ 1.0, 2.0, 4.0, 6.0, 12.0 ]
+                    }
+                },
+                "constraint_modes":
+                {
+                    "normal": [
+                        {
+                            "bound": "LOWER",
+                            "q_lo": 0.98,
+                            "q_hi": 1.0,
+                            "y_target":
+                            [
+                                0, 0.3,
+                                1000, 0.3
+                            ]
+                        }
+                    ],
+                    "highlight": [
+                        {
+                            "bound": "LOWER",
+                            "q_lo": 0.98,
+                            "q_hi": 1.0,
+                            "y_target":
+                            [
+                                0, 0.3,
+                                1000, 0.3
+                            ]
+                        },
+                        {
+                            "bound": "UPPER",
+                            "q_lo": 0.98,
+                            "q_hi": 1.0,
+                            "y_target":
+                            [
+                                0, 0.8,
+                                1000, 0.8
+                            ]
+                        }
+                    ],
+                    "shadows": [
+                        {
+                            "bound": "LOWER",
+                            "q_lo": 0.0,
+                            "q_hi": 0.5,
+                            "y_target":
+                            [
+                                0, 0.17,
+                                1000, 0.17
+                            ]
+                        }
+                    ]
+                },
+                "y_target":
+                [
+                    0, 0.16,
+                    1000, 0.165,
+                    10000, 0.17
+                ]
+            }
+        },
+        {
+            "rpi.contrast":
+            {
+                "ce_enable": 0,
+                "gamma_curve":
+                [
+                    0, 0,
+                    512, 2304,
+                    1024, 4608,
+                    1536, 6573,
+                    2048, 8401,
+                    2560, 9992,
+                    3072, 11418,
+                    3584, 12719,
+                    4096, 13922,
+                    4608, 15045,
+                    5120, 16103,
+                    5632, 17104,
+                    6144, 18056,
+                    6656, 18967,
+                    7168, 19839,
+                    7680, 20679,
+                    8192, 21488,
+                    9216, 23028,
+                    10240, 24477,
+                    11264, 25849,
+                    12288, 27154,
+                    13312, 28401,
+                    14336, 29597,
+                    15360, 30747,
+                    16384, 31856,
+                    17408, 32928,
+                    18432, 33966,
+                    19456, 34973,
+                    20480, 35952,
+                    22528, 37832,
+                    24576, 39621,
+                    26624, 41330,
+                    28672, 42969,
+                    30720, 44545,
+                    32768, 46065,
+                    34816, 47534,
+                    36864, 48956,
+                    38912, 50336,
+                    40960, 51677,
+                    43008, 52982,
+                    45056, 54253,
+                    47104, 55493,
+                    49152, 56704,
+                    51200, 57888,
+                    53248, 59046,
+                    55296, 60181,
+                    57344, 61292,
+                    59392, 62382,
+                    61440, 63452,
+                    63488, 64503,
+                    65535, 65535
+                ]
+            }
+        },
+        {
+            "rpi.ccm":
+            {
+                "ccms": [
+                    {
+                        "ct": 2000,
+                        "ccm":
+                        [
+                            1.5813882365848004, -0.35293683714581114, -0.27378771561617715,
+                            -0.4347297185453639, 1.5792631087746074, -0.12102601986382337,
+                            0.2322290578987574, -1.4382672640468128, 2.1386425781770755
+                        ]
+                    },
+                    {
+                        "ct": 2200,
+                        "ccm":
+                        [
+                            1.6322048484088305, -0.45932286857238486, -0.21373542690252198,
+                            -0.3970719209901105, 1.5877868651467202, -0.17249380832122455,
+                            0.20753774825903412, -1.2660673594740142, 2.005654261091916
+                        ]
+                    },
+                    {
+                        "ct": 2400,
+                        "ccm":
+                        [
+                            1.6766610071470398, -0.5447101051688111, -0.16838641107407676,
+                            -0.3659845183388154, 1.592223692670396, -0.2127091997471162,
+                            0.1833964516767549, -1.1339155942419321, 1.9089342978542396
+                        ]
+                    },
+                    {
+                        "ct": 2600,
+                        "ccm":
+                        [
+                            1.7161984340622154, -0.6152585785678794, -0.1331100845092582,
+                            -0.33972082628066275, 1.5944888273736966, -0.2453979465898787,
+                            0.1615577497676328, -1.0298684958833109, 1.8357854177422053
+                        ]
+                    },
+                    {
+                        "ct": 2800,
+                        "ccm":
+                        [
+                            1.7519307259815728, -0.6748682080165339, -0.10515169074540848,
+                            -0.3171703484479931, 1.5955820297498486, -0.2727395854813966,
+                            0.14230870739974305, -0.9460976023551511, 1.778709391659538
+                        ]
+                    },
+                    {
+                        "ct": 3000,
+                        "ccm":
+                        [
+                            1.7846716625128374, -0.7261240476375332, -0.08274697420358428,
+                            -0.2975654035173307, 1.5960425637021738, -0.2961043416505157,
+                            0.12546426281675097, -0.8773434727076518, 1.7330356805246685
+                        ]
+                    },
+                    {
+                        "ct": 3200,
+                        "ccm":
+                        [
+                            1.8150085872943436, -0.7708109672515514, -0.06469468211419174,
+                            -0.2803468940646277, 1.596168842967451, -0.3164044170681625,
+                            0.11071494533513807, -0.8199772290209191, 1.69572135046367
+                        ]
+                    },
+                    {
+                        "ct": 3400,
+                        "ccm":
+                        [
+                            1.8433668304932087, -0.8102060605062592, -0.05013485852801454,
+                            -0.2650934036324084, 1.5961288492969294, -0.33427554893845535,
+                            0.0977478941863518, -0.7714303112098978, 1.6647070820146963
+                        ]
+                    },
+                    {
+                        "ct": 3600,
+                        "ccm":
+                        [
+                            1.8700575831917468, -0.8452518300291346, -0.03842644337477299,
+                            -0.2514794528347016, 1.5960178299141876, -0.3501774949366156,
+                            0.08628520830733245, -0.729841503339915, 1.638553343939267
+                        ]
+                    },
+                    {
+                        "ct": 4100,
+                        "ccm":
+                        [
+                            1.8988700903560716, -0.8911278803351247, -0.018848644425650693,
+                            -0.21487101487384094, 1.599236541382614, -0.39405450457918206,
+                            0.08251488056482173, -0.7178919368326191, 1.6267009056502704
+                        ]
+                    },
+                    {
+                        "ct": 4600,
+                        "ccm":
+                        [
+                            1.960355191764125, -0.9624344812121991, -0.0017122408632169205,
+                            -0.19444620905212898, 1.5978493736948447, -0.416727638296156,
+                            0.06310261513271084, -0.6483790952487849, 1.5834605477213093
+                        ]
+                    },
+                    {
+                        "ct": 5100,
+                        "ccm":
+                        [
+                            2.014680536961399, -1.0195930302148566, 0.007728256612638915,
+                            -0.17751999660735496, 1.5977081555831, -0.4366085498741474,
+                            0.04741267583041334, -0.5950327902073489, 1.5512919847321853
+                        ]
+                    },
+                    {
+                        "ct": 5600,
+                        "ccm":
+                        [
+                            2.062652337917251, -1.0658386679125478, 0.011886354256281267,
+                            -0.16319197721451495, 1.598363237584736, -0.45422061523742235,
+                            0.03465810928795378, -0.5535454108047286, 1.5269025836946852
+                        ]
+                    },
+                    {
+                        "ct": 6100,
+                        "ccm":
+                        [
+                            2.104985902038069, -1.103597868736314, 0.012503517136539277,
+                            -0.15090797064906178, 1.5994703078166095, -0.4698414300864995,
+                            0.02421766063474242, -0.5208922818196823, 1.5081270847783788
+                        ]
+                    },
+                    {
+                        "ct": 6600,
+                        "ccm":
+                        [
+                            2.1424988751299714, -1.134760232367728, 0.010730356010435522,
+                            -0.14021846798466234, 1.600822462230719, -0.48379204794526487,
+                            0.015521315410496622, -0.49463630325832275, 1.4933313534840327
+                        ]
+                    },
+                    {
+                        "ct": 7100,
+                        "ccm":
+                        [
+                            2.1758034100130925, -1.1607558481037359, 0.007452724895469076,
+                            -0.13085694672641826, 1.6022648614493245, -0.4962330524084075,
+                            0.008226943206113427, -0.4733077192319791, 1.4815336120437468
+                        ]
+                    },
+                    {
+                        "ct": 7600,
+                        "ccm":
+                        [
+                            2.205529206931895, -1.1826662383072108, 0.0032019529917605167,
+                            -0.122572009780486, 1.6037258133595753, -0.5073973734282445,
+                            0.0020132587619863425, -0.4556590236414181, 1.471939788496745
+                        ]
+                    },
+                    {
+                        "ct": 8100,
+                        "ccm":
+                        [
+                            2.232224969223067, -1.2013672897252885, -0.0016234598095482985,
+                            -0.11518026734442414, 1.6051544769439803, -0.5174558699422255,
+                            -0.0033378143542219835, -0.4408590373867774, 1.4640252230667452
+                        ]
+                    },
+                    {
+                        "ct": 8600,
+                        "ccm":
+                        [
+                            2.256082295891265, -1.2173210549996634, -0.0067231350481711675,
+                            -0.10860272839843167, 1.6065150139140594, -0.5264728573611493,
+                            -0.007952618707984149, -0.4284003574050791, 1.4574646927117558
+                        ]
+                    }
+                ]
+            }
+        },
+        {
+            "rpi.sharpen": { }
+        },
+        {
+            "rpi.focus": { }
+        }
+    ]
+}
\ No newline at end of file
diff --git a/src/ipa/raspberrypi/data/meson.build b/src/ipa/raspberrypi/data/meson.build
index 84c1dabb..5565508c 100644
--- a/src/ipa/raspberrypi/data/meson.build
+++ b/src/ipa/raspberrypi/data/meson.build
@@ -9,6 +9,7 @@ conf_files = files([
     'imx378.json',
     'imx477.json',
     'imx477_noir.json',
+    'imx477_scientific.json',
     'imx519.json',
     'ov5647.json',
     'ov5647_noir.json',