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Diffstat (limited to 'extern/libmv/libmv/image/sample_test.cc')
-rw-r--r--extern/libmv/libmv/image/sample_test.cc89
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diff --git a/extern/libmv/libmv/image/sample_test.cc b/extern/libmv/libmv/image/sample_test.cc
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--- a/extern/libmv/libmv/image/sample_test.cc
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-// Copyright (c) 2007, 2008 libmv authors.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to
-// deal in the Software without restriction, including without limitation the
-// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
-// sell copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
-// IN THE SOFTWARE.
-
-#include "libmv/image/sample.h"
-#include "testing/testing.h"
-
-using namespace libmv;
-
-namespace {
-
-TEST(Image, Nearest) {
- Array3Du image(2, 2);
- image(0, 0) = 0;
- image(0, 1) = 1;
- image(1, 0) = 2;
- image(1, 1) = 3;
- EXPECT_EQ(0, SampleNearest(image, -0.4f, -0.4f));
- EXPECT_EQ(0, SampleNearest(image, 0.4f, 0.4f));
- EXPECT_EQ(3, SampleNearest(image, 0.6f, 0.6f));
- EXPECT_EQ(3, SampleNearest(image, 1.4f, 1.4f));
-}
-
-TEST(Image, Linear) {
- Array3Df image(2, 2);
- image(0, 0) = 0;
- image(0, 1) = 1;
- image(1, 0) = 2;
- image(1, 1) = 3;
- EXPECT_EQ(1.5, SampleLinear(image, 0.5, 0.5));
-}
-
-TEST(Image, DownsampleBy2) {
- Array3Df image(2, 2);
- image(0, 0) = 0;
- image(0, 1) = 1;
- image(1, 0) = 2;
- image(1, 1) = 3;
- Array3Df resampled_image;
- DownsampleChannelsBy2(image, &resampled_image);
- ASSERT_EQ(1, resampled_image.Height());
- ASSERT_EQ(1, resampled_image.Width());
- ASSERT_EQ(1, resampled_image.Depth());
- EXPECT_FLOAT_EQ(6./4., resampled_image(0, 0));
-}
-
-TEST(Image, DownsampleBy2MultiChannel) {
- Array3Df image(2, 2, 3);
- image(0, 0, 0) = 0;
- image(0, 1, 0) = 1;
- image(1, 0, 0) = 2;
- image(1, 1, 0) = 3;
-
- image(0, 0, 1) = 5;
- image(0, 1, 1) = 6;
- image(1, 0, 1) = 7;
- image(1, 1, 1) = 8;
-
- image(0, 0, 2) = 9;
- image(0, 1, 2) = 10;
- image(1, 0, 2) = 11;
- image(1, 1, 2) = 12;
-
- Array3Df resampled_image;
- DownsampleChannelsBy2(image, &resampled_image);
- ASSERT_EQ(1, resampled_image.Height());
- ASSERT_EQ(1, resampled_image.Width());
- ASSERT_EQ(3, resampled_image.Depth());
- EXPECT_FLOAT_EQ((0+1+2+3)/4., resampled_image(0, 0, 0));
- EXPECT_FLOAT_EQ((5+6+7+8)/4., resampled_image(0, 0, 1));
- EXPECT_FLOAT_EQ((9+10+11+12)/4., resampled_image(0, 0, 2));
-}
-} // namespace