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rank_test.go
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rank_test.go
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package gift
import (
"image"
"testing"
)
func TestMedian(t *testing.T) {
testData := []struct {
desc string
ksize int
disk bool
srcb, dstb image.Rectangle
srcPix, dstPix []uint8
}{
{
"median (0, false)",
0, false,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
},
{
"median (1, false)",
1, false,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
},
{
"median (2, false)",
2, false,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
},
{
"median (3, false)",
3, false,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0x44, 0x55, 0x55, 0x55, 0x66,
0x44, 0x77, 0x88, 0x88, 0x66,
0x44, 0x77, 0x88, 0xBB, 0xCC,
},
},
{
"median (3, true)",
3, true,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0x11, 0x55, 0x55, 0x55, 0x66,
0x44, 0x99, 0xBB, 0x88, 0x66,
0x33, 0x77, 0xBB, 0xBB, 0xEE,
},
},
{
"median (4, true)",
4, true,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0x11, 0x55, 0x55, 0x55, 0x66,
0x44, 0x99, 0xBB, 0x88, 0x66,
0x33, 0x77, 0xBB, 0xBB, 0xEE,
},
},
}
for _, d := range testData {
src := image.NewGray(d.srcb)
src.Pix = d.srcPix
f := Median(d.ksize, d.disk)
dst := image.NewGray(f.Bounds(src.Bounds()))
f.Draw(dst, src, nil)
if !checkBoundsAndPix(dst.Bounds(), d.dstb, dst.Pix, d.dstPix) {
t.Errorf("test [%s] failed: %#v, %#v", d.desc, dst.Bounds(), dst.Pix)
}
}
testDataNRGBA := []struct {
desc string
ksize int
disk bool
srcb, dstb image.Rectangle
srcPix, dstPix []uint8
}{
{
"median nrgba (3, true)",
3, true,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x00, 0x00, 0x00, 0x11, 0x00, 0x00, 0x00, 0x99, 0x00, 0x00, 0x00, 0x55, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x66,
0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0x44, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xCC, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x33, 0x00, 0x00, 0x00, 0x77, 0x00, 0x00, 0x00, 0xBB, 0x00, 0x00, 0x00, 0x88, 0x00, 0x00, 0x00, 0xEE,
},
[]uint8{
0x00, 0x00, 0x00, 0x11, 0x00, 0x00, 0x00, 0x55, 0x00, 0x00, 0x00, 0x55, 0x00, 0x00, 0x00, 0x55, 0x00, 0x00, 0x00, 0x66,
0x00, 0x00, 0x00, 0x44, 0x00, 0x00, 0x00, 0x99, 0x00, 0x00, 0x00, 0xBB, 0x00, 0x00, 0x00, 0x88, 0x00, 0x00, 0x00, 0x66,
0x00, 0x00, 0x00, 0x33, 0x00, 0x00, 0x00, 0x77, 0x00, 0x00, 0x00, 0xBB, 0x00, 0x00, 0x00, 0xBB, 0x00, 0x00, 0x00, 0xEE,
},
},
}
for _, d := range testDataNRGBA {
src := image.NewNRGBA(d.srcb)
src.Pix = d.srcPix
f := Median(d.ksize, d.disk)
dst := image.NewNRGBA(f.Bounds(src.Bounds()))
f.Draw(dst, src, nil)
if !checkBoundsAndPix(dst.Bounds(), d.dstb, dst.Pix, d.dstPix) {
t.Errorf("test [%s] failed: %#v, %#v", d.desc, dst.Bounds(), dst.Pix)
}
}
// check no panics
Median(5, false).Draw(image.NewGray(image.Rect(0, 0, 1, 1)), image.NewGray(image.Rect(0, 0, 1, 1)), nil)
Median(5, false).Draw(image.NewGray(image.Rect(0, 0, 0, 0)), image.NewGray(image.Rect(0, 0, 0, 0)), nil)
}
func TestMinimum(t *testing.T) {
testData := []struct {
desc string
ksize int
disk bool
srcb, dstb image.Rectangle
srcPix, dstPix []uint8
}{
{
"minimum (0, false)",
0, false,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
},
{
"minimum (1, false)",
1, false,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
},
{
"minimum (2, false)",
2, false,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
},
{
"minimum (3, false)",
3, false,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0x11, 0x11, 0x22, 0x00, 0x00,
0x11, 0x11, 0x22, 0x00, 0x00,
0x33, 0x33, 0x44, 0x00, 0x00,
},
},
{
"minimum (3, true)",
3, true,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0x11, 0x11, 0x22, 0x22, 0x00,
0x11, 0x44, 0x44, 0x00, 0x00,
0x33, 0x33, 0x77, 0x88, 0x00,
},
},
{
"minimum (4, true)",
4, true,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0x11, 0x11, 0x22, 0x22, 0x00,
0x11, 0x44, 0x44, 0x00, 0x00,
0x33, 0x33, 0x77, 0x88, 0x00,
},
},
}
for _, d := range testData {
src := image.NewGray(d.srcb)
src.Pix = d.srcPix
f := Minimum(d.ksize, d.disk)
dst := image.NewGray(f.Bounds(src.Bounds()))
f.Draw(dst, src, nil)
if !checkBoundsAndPix(dst.Bounds(), d.dstb, dst.Pix, d.dstPix) {
t.Errorf("test [%s] failed: %#v, %#v", d.desc, dst.Bounds(), dst.Pix)
}
}
testDataNRGBA := []struct {
desc string
ksize int
disk bool
srcb, dstb image.Rectangle
srcPix, dstPix []uint8
}{
{
"minimum nrgba (3, true)",
3, true,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x00, 0x00, 0x00, 0x11, 0x00, 0x00, 0x00, 0x99, 0x00, 0x00, 0x00, 0x55, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x66,
0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0x44, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xCC, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x33, 0x00, 0x00, 0x00, 0x77, 0x00, 0x00, 0x00, 0xBB, 0x00, 0x00, 0x00, 0x88, 0x00, 0x00, 0x00, 0xEE,
},
[]uint8{
0x00, 0x00, 0x00, 0x11, 0x00, 0x00, 0x00, 0x11, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x11, 0x00, 0x00, 0x00, 0x44, 0x00, 0x00, 0x00, 0x44, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x33, 0x00, 0x00, 0x00, 0x33, 0x00, 0x00, 0x00, 0x77, 0x00, 0x00, 0x00, 0x88, 0x00, 0x00, 0x00, 0x00,
},
},
}
for _, d := range testDataNRGBA {
src := image.NewNRGBA(d.srcb)
src.Pix = d.srcPix
f := Minimum(d.ksize, d.disk)
dst := image.NewNRGBA(f.Bounds(src.Bounds()))
f.Draw(dst, src, nil)
if !checkBoundsAndPix(dst.Bounds(), d.dstb, dst.Pix, d.dstPix) {
t.Errorf("test [%s] failed: %#v, %#v", d.desc, dst.Bounds(), dst.Pix)
}
}
}
func TestMaximum(t *testing.T) {
testData := []struct {
desc string
ksize int
disk bool
srcb, dstb image.Rectangle
srcPix, dstPix []uint8
}{
{
"maximum (0, false)",
0, false,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
},
{
"maximum (1, false)",
1, false,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
},
{
"maximum (2, false)",
2, false,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
},
{
"maximum (3, false)",
3, false,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0xFF, 0xFF, 0xFF, 0xFF, 0xCC,
0xFF, 0xFF, 0xFF, 0xFF, 0xEE,
0xFF, 0xFF, 0xFF, 0xFF, 0xEE,
},
},
{
"maximum (3, true)",
3, true,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0xFF, 0x99, 0xFF, 0xCC, 0x66,
0xFF, 0xFF, 0xFF, 0xFF, 0xEE,
0xFF, 0xBB, 0xFF, 0xEE, 0xEE,
},
},
{
"maximum (4, true)",
4, true,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x11, 0x99, 0x55, 0x22, 0x66,
0xFF, 0x44, 0xFF, 0xCC, 0x00,
0x33, 0x77, 0xBB, 0x88, 0xEE,
},
[]uint8{
0xFF, 0x99, 0xFF, 0xCC, 0x66,
0xFF, 0xFF, 0xFF, 0xFF, 0xEE,
0xFF, 0xBB, 0xFF, 0xEE, 0xEE,
},
},
}
for _, d := range testData {
src := image.NewGray(d.srcb)
src.Pix = d.srcPix
f := Maximum(d.ksize, d.disk)
dst := image.NewGray(f.Bounds(src.Bounds()))
f.Draw(dst, src, nil)
if !checkBoundsAndPix(dst.Bounds(), d.dstb, dst.Pix, d.dstPix) {
t.Errorf("test [%s] failed: %#v, %#v", d.desc, dst.Bounds(), dst.Pix)
}
}
testDataNRGBA := []struct {
desc string
ksize int
disk bool
srcb, dstb image.Rectangle
srcPix, dstPix []uint8
}{
{
"maximum nrgba (3, true)",
3, true,
image.Rect(-1, -1, 4, 2),
image.Rect(0, 0, 5, 3),
[]uint8{
0x00, 0x00, 0x00, 0x11, 0x00, 0x00, 0x00, 0x99, 0x00, 0x00, 0x00, 0x55, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x66,
0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0x44, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xCC, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x33, 0x00, 0x00, 0x00, 0x77, 0x00, 0x00, 0x00, 0xBB, 0x00, 0x00, 0x00, 0x88, 0x00, 0x00, 0x00, 0xEE,
},
[]uint8{
0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0x99, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xCC, 0x00, 0x00, 0x00, 0x66,
0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xEE,
0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xBB, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xEE, 0x00, 0x00, 0x00, 0xEE,
},
},
}
for _, d := range testDataNRGBA {
src := image.NewNRGBA(d.srcb)
src.Pix = d.srcPix
f := Maximum(d.ksize, d.disk)
dst := image.NewNRGBA(f.Bounds(src.Bounds()))
f.Draw(dst, src, nil)
if !checkBoundsAndPix(dst.Bounds(), d.dstb, dst.Pix, d.dstPix) {
t.Errorf("test [%s] failed: %#v, %#v", d.desc, dst.Bounds(), dst.Pix)
}
}
}