/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright (C) 2023, Ideas On Board Oy * * Transform and Orientation tests */ #include #include #include #include "test.h" using namespace std; using namespace libcamera; class TransformTest : public Test { protected: int run(); }; int TransformTest::run() { /* * RotationTestEntry collects two Orientation and one Transform that * gets combined to validate that (o1 / o2 = T) and (o1 = o2 * T) * * o1 / o2 = t computes the Transform to apply to o2 to obtain o1 * o2 * t = o1 combines o2 with t by applying o2 first then t * * The comments on the (most complex) transform show how applying to * an image with orientation o2 the Transform t allows to obtain o1. * * The image with basic rotation0 is assumed to be: * * AB * CD * * And the Transform operators are: * * V = vertical flip * H = horizontal flip * T = transpose * * the operator '* (T|V)' applies V first then T. */ static const struct RotationTestEntry { Orientation o1; Orientation o2; Transform t; } testEntries[] = { /* Test identities transforms first. */ { Orientation::Rotate0, Orientation::Rotate0, Transform::Identity, }, { Orientation::Rotate0Mirror, Orientation::Rotate0Mirror, Transform::Identity, }, { Orientation::Rotate180, Orientation::Rotate180, Transform::Identity, }, { Orientation::Rotate180Mirror, Orientation::Rotate180Mirror, Transform::Identity, }, { Orientation::Rotate90, Orientation::Rotate90, Transform::Identity, }, { Orientation::Rotate90Mirror, Orientation::Rotate90Mirror, Transform::Identity, }, { Orientation::Rotate270, Orientation::Rotate270, Transform::Identity, }, { Orientation::Rotate270Mirror, Orientation::Rotate270Mirror, Transform::Identity, }, /* * Combine 0 and 180 degrees rotation as they're the most common * ones. */ { /* * o2 t o1 * -------------------------- * CD * (H|V) = BA AB * BA CD CD */ Orientation::Rotate0, Orientation::Rotate180, Transform::Rot180, }, { /* * o2 t o1 * -------------------------- * AB * (H|V) = CD DC * CD AB BA */ Orientation::Rotate180, Orientation::Rotate0, Transform::Rot180 }, /* Test that transpositions are handled correctly. */ { /* * o2 t o1 * -------------------------- * AB * (T|V) = CD CA * CD AB DB */ Orientation::Rotate90, Orientation::Rotate0, Transform::Rot90, }, { /* * o2 t o1 * -------------------------- * CA * (T|H) = AC AB * DB BD CD */ Orientation::Rotate0, Orientation::Rotate90, Transform::Rot270, }, { /* * o2 t o1 * -------------------------- * AB * (T|H) = BA BD * CD DC AC */ Orientation::Rotate270, Orientation::Rotate0, Transform::Rot270, }, { /* * o2 t o1 * -------------------------- * BD * (T|V) = AC AB * AC BD CD */ Orientation::Rotate0, Orientation::Rotate270, Transform::Rot90, }, { /* * o2 t o1 * -------------------------- * CD * (T|H) = DC DA * BA AB CB */ Orientation::Rotate90, Orientation::Rotate180, Transform::Rot270, }, { /* * o2 t o1 * -------------------------- * DA * (T|V) = CB CD * CB DA BA */ Orientation::Rotate180, Orientation::Rotate90, Transform::Rot90, }, { /* * o2 t o1 * -------------------------- * CD * (T|V) = BA BC * BA CD AD */ Orientation::Rotate270, Orientation::Rotate180, Transform::Rot90, }, { /* * o2 t o1 * -------------------------- * BC * (T|H) = CB CD * AD DA BA */ Orientation::Rotate180, Orientation::Rotate270, Transform::Rot270, }, { /* * o2 t o1 * -------------------------- * DA * (V|H) = AD BC * CB BC AD */ Orientation::Rotate270, Orientation::Rotate90, Transform::Rot180, }, /* Test that mirroring is handled correctly. */ { Orientation::Rotate0, Orientation::Rotate0Mirror, Transform::HFlip }, { Orientation::Rotate0Mirror, Orientation::Rotate0, Transform::HFlip }, { Orientation::Rotate180, Orientation::Rotate180Mirror, Transform::HFlip }, { Orientation::Rotate180Mirror, Orientation::Rotate180, Transform::HFlip }, { Orientation::Rotate90, Orientation::Rotate90Mirror, Transform::HFlip }, { Orientation::Rotate90Mirror, Orientation::Rotate90, Transform::HFlip }, { Orientation::Rotate270, Orientation::Rotate270Mirror, Transform::HFlip }, { Orientation::Rotate270Mirror, Orientation::Rotate270, Transform::HFlip }, { Orientation::Rotate0, Orientation::Rotate0Mirror, Transform::HFlip }, /* * More exotic transforms which include Transpositions and * mirroring. */ { /* * o2 t o1 * ------------------ * BC * (V) = AD * AD BC */ Orientation::Rotate90Mirror, Orientation::Rotate270, Transform::VFlip, }, { /* * o2 t o1 * ------------------ * CB * (T) = CD * DA BA */ Orientation::Rotate180, Orientation::Rotate270Mirror, Transform::Transpose, }, { /* * o2 t o1 * ------------------ * AD * (T) = AB * BC DC */ Orientation::Rotate0, Orientation::Rotate90Mirror, Transform::Transpose, }, { /* * o2 t o1 * ------------------ * AD * (V) = BC * BC AD */ Orientation::Rotate270, Orientation::Rotate90Mirror, Transform::VFlip, }, { /* * o2 t o1 * ------------------ * DA * (V) = CB * CB DA */ Orientation::Rotate270Mirror, Orientation::Rotate90, Transform::VFlip, }, { /* * o2 t o1 * -------------------------- * CB * (V|H) = BC AD * DA AD BC */ Orientation::Rotate90Mirror, Orientation::Rotate270Mirror, Transform::Rot180, }, }; for (const auto &entry : testEntries) { Transform transform = entry.o1 / entry.o2; if (transform != entry.t) { cerr << "Failed to validate: " << entry.o1 << " / " << entry.o2 << " = " << transformToString(entry.t) << endl; cerr << "Got back: " << transformToString(transform) << endl; return TestFail; } Orientation adjusted = entry.o2 * entry.t; if (adjusted != entry.o1) { cerr << "Failed to validate: " << entry.o2 << " * " << transformToString(entry.t) << " = " << entry.o1 << endl; cerr << "Got back: " << adjusted << endl; return TestFail; } } return TestPass; } TEST_REGISTER(TransformTest) 'n122' href='#n122'>122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224

# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (C) 2019, Raspberry Pi (Trading) Limited
#
# ctt_ccm.py - camera tuning tool for CCM (colour correction matrix)

from ctt_image_load import *
from ctt_awb import get_alsc_patches


"""
takes 8-bit macbeth chart values, degammas and returns 16 bit
"""
def degamma(x):
    x = x / ((2**8)-1)
    x = np.where(x < 0.04045, x/12.92, ((x+0.055)/1.055)**2.4)
    x = x * ((2**16)-1)
    return x


"""
FInds colour correction matrices for list of images
"""
def ccm(Cam, cal_cr_list, cal_cb_list):
    imgs = Cam.imgs
    """
    standard macbeth chart colour values
    """
    m_rgb = np.array([  # these are in sRGB
        [116, 81, 67],    # dark skin
        [199, 147, 129],  # light skin