78 lines
1.9 KiB
Go
78 lines
1.9 KiB
Go
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// 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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