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77 lines
1.9 KiB
77 lines
1.9 KiB
// Copyright 2011 The Graphics-Go Authors. All rights reserved. |
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// Use of this source code is governed by a BSD-style |
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// license that can be found in the LICENSE file. |
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package detect |
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import ( |
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"image" |
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"image/draw" |
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"testing" |
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) |
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var ( |
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c0 = Classifier{ |
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Feature: []Feature{ |
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Feature{Rect: image.Rect(0, 0, 3, 4), Weight: 4.0}, |
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}, |
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Threshold: 0.2, |
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Left: 0.8, |
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Right: 0.2, |
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} |
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c1 = Classifier{ |
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Feature: []Feature{ |
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Feature{Rect: image.Rect(3, 4, 4, 5), Weight: 4.0}, |
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}, |
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Threshold: 0.2, |
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Left: 0.8, |
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Right: 0.2, |
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} |
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c2 = Classifier{ |
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Feature: []Feature{ |
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Feature{Rect: image.Rect(0, 0, 1, 1), Weight: +4.0}, |
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Feature{Rect: image.Rect(0, 0, 2, 2), Weight: -1.0}, |
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}, |
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Threshold: 0.2, |
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Left: 0.8, |
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Right: 0.2, |
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} |
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) |
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func TestClassifier(t *testing.T) { |
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m := image.NewGray(image.Rect(0, 0, 20, 20)) |
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b := m.Bounds() |
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draw.Draw(m, image.Rect(0, 0, 20, 20), image.White, image.ZP, draw.Src) |
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draw.Draw(m, image.Rect(3, 4, 4, 5), image.Black, image.ZP, draw.Src) |
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w := newWindow(m) |
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pr := newProjector(b, b) |
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if res := c0.classify(w, pr); res != c0.Right { |
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t.Errorf("c0 got %f want %f", res, c0.Right) |
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} |
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if res := c1.classify(w, pr); res != c1.Left { |
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t.Errorf("c1 got %f want %f", res, c1.Left) |
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} |
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if res := c2.classify(w, pr); res != c1.Left { |
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t.Errorf("c2 got %f want %f", res, c1.Left) |
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} |
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} |
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func TestClassifierScale(t *testing.T) { |
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m := image.NewGray(image.Rect(0, 0, 50, 50)) |
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b := m.Bounds() |
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draw.Draw(m, image.Rect(0, 0, 8, 10), image.White, b.Min, draw.Src) |
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draw.Draw(m, image.Rect(8, 10, 10, 13), image.Black, b.Min, draw.Src) |
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w := newWindow(m) |
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pr := newProjector(b, image.Rect(0, 0, 20, 20)) |
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if res := c0.classify(w, pr); res != c0.Right { |
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t.Errorf("scaled c0 got %f want %f", res, c0.Right) |
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} |
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if res := c1.classify(w, pr); res != c1.Left { |
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t.Errorf("scaled c1 got %f want %f", res, c1.Left) |
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} |
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if res := c2.classify(w, pr); res != c1.Left { |
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t.Errorf("scaled c2 got %f want %f", res, c1.Left) |
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} |
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}
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