diff options
Diffstat (limited to 'preproc')
| -rw-r--r-- | preproc/cmd/binarize/main.go | 2 | ||||
| -rw-r--r-- | preproc/cmd/preproc/main.go | 2 | ||||
| -rw-r--r-- | preproc/cmd/preprocmulti/main.go | 2 | ||||
| -rw-r--r-- | preproc/sauvola.go | 6 | ||||
| -rw-r--r-- | preproc/sauvola_test.go | 10 | ||||
| -rw-r--r-- | preproc/util.go | 6 | ||||
| -rw-r--r-- | preproc/wipesides.go | 2 |
7 files changed, 15 insertions, 15 deletions
diff --git a/preproc/cmd/binarize/main.go b/preproc/cmd/binarize/main.go index c274f9c..e7f677e 100644 --- a/preproc/cmd/binarize/main.go +++ b/preproc/cmd/binarize/main.go @@ -50,7 +50,7 @@ func main() { log.Printf("Set window size to %d\n", *wsize) } - if *wsize % 2 == 0 { + if *wsize%2 == 0 { *wsize++ } diff --git a/preproc/cmd/preproc/main.go b/preproc/cmd/preproc/main.go index 92e8509..053de8f 100644 --- a/preproc/cmd/preproc/main.go +++ b/preproc/cmd/preproc/main.go @@ -55,7 +55,7 @@ func main() { *binwsize = autowsize(b) } - if *binwsize % 2 == 0 { + if *binwsize%2 == 0 { *binwsize++ } diff --git a/preproc/cmd/preprocmulti/main.go b/preproc/cmd/preprocmulti/main.go index a159938..01afb9b 100644 --- a/preproc/cmd/preprocmulti/main.go +++ b/preproc/cmd/preprocmulti/main.go @@ -57,7 +57,7 @@ func main() { *binwsize = autowsize(b) } - if *binwsize % 2 == 0 { + if *binwsize%2 == 0 { *binwsize++ } diff --git a/preproc/sauvola.go b/preproc/sauvola.go index 2ed9a92..046bb7d 100644 --- a/preproc/sauvola.go +++ b/preproc/sauvola.go @@ -17,7 +17,7 @@ func Sauvola(img *image.Gray, ksize float64, windowsize int) *image.Gray { for x := b.Min.X; x < b.Max.X; x++ { window := surrounding(img, x, y, windowsize) m, dev := meanstddev(window) - threshold := m * (1 + ksize * ((dev / 128) - 1)) + threshold := m * (1 + ksize*((dev/128)-1)) if img.GrayAt(x, y).Y < uint8(threshold) { new.SetGray(x, y, color.Gray{0}) } else { @@ -42,7 +42,7 @@ func IntegralSauvola(img *image.Gray, ksize float64, windowsize int) *image.Gray for y := b.Min.Y; y < b.Max.Y; y++ { for x := b.Min.X; x < b.Max.X; x++ { m, dev := integrals.MeanStdDevWindow(x, y, windowsize) - threshold := m * (1 + ksize * ((dev / 128) - 1)) + threshold := m * (1 + ksize*((dev/128)-1)) if img.GrayAt(x, y).Y < uint8(threshold) { new.SetGray(x, y, color.Gray{0}) } else { @@ -63,7 +63,7 @@ func PreCalcedSauvola(integrals integralimg.WithSq, img *image.Gray, ksize float for y := b.Min.Y; y < b.Max.Y; y++ { for x := b.Min.X; x < b.Max.X; x++ { m, dev := integrals.MeanStdDevWindow(x, y, windowsize) - threshold := m * (1 + ksize * ((dev / 128) - 1)) + threshold := m * (1 + ksize*((dev/128)-1)) if img.GrayAt(x, y).Y < uint8(threshold) { new.SetGray(x, y, color.Gray{0}) } else { diff --git a/preproc/sauvola_test.go b/preproc/sauvola_test.go index deefb96..2331e10 100644 --- a/preproc/sauvola_test.go +++ b/preproc/sauvola_test.go @@ -14,11 +14,11 @@ func TestBinarization(t *testing.T) { var update = flag.Bool("updatesauvola", false, "update golden files") cases := []struct { - name string - orig string + name string + orig string golden string - ksize float64 - wsize int + ksize float64 + wsize int }{ {"integralsauvola", "testdata/pg1.png", "testdata/pg1_integralsauvola_k0.5_w41.png", 0.5, 41}, {"integralsauvola", "testdata/pg1.png", "testdata/pg1_integralsauvola_k0.5_w19.png", 0.5, 19}, @@ -62,7 +62,7 @@ func TestBinarization(t *testing.T) { if err != nil { t.Fatalf("Could not open file %s: %v\n", c.golden, err) } - if ! imgsequal(golden, actual) { + if !imgsequal(golden, actual) { t.Errorf("Binarized %s differs to %s\n", c.orig, c.golden) } }) diff --git a/preproc/util.go b/preproc/util.go index 5f8a9f1..e23829d 100644 --- a/preproc/util.go +++ b/preproc/util.go @@ -29,7 +29,7 @@ func stddev(i []int) float64 { for _, n := range i { sum += (float64(n) - m) * (float64(n) - m) } - variance := sum / float64(len(i) - 1) + variance := sum / float64(len(i)-1) return math.Sqrt(variance) } @@ -40,7 +40,7 @@ func meanstddev(i []int) (float64, float64) { for _, n := range i { sum += (float64(n) - m) * (float64(n) - m) } - variance := float64(sum) / float64(len(i) - 1) + variance := float64(sum) / float64(len(i)-1) return m, math.Sqrt(variance) } @@ -77,7 +77,7 @@ func surrounding(img *image.Gray, x int, y int, size int) []int { func BinToZeroInv(bin *image.Gray, orig *image.RGBA) (*image.RGBA, error) { b := bin.Bounds() - if ! b.Eq(orig.Bounds()) { + if !b.Eq(orig.Bounds()) { return orig, errors.New("bin and orig images need to be the same dimensions") } newimg := image.NewRGBA(image.Rect(0, 0, b.Dx(), b.Dy())) diff --git a/preproc/wipesides.go b/preproc/wipesides.go index 5291d00..04bfa11 100644 --- a/preproc/wipesides.go +++ b/preproc/wipesides.go @@ -12,7 +12,7 @@ import ( // returns the proportion of the given window that is black pixels func proportion(i integralimg.I, x int, size int) float64 { - w := i.GetVerticalWindow(x, size) + w := i.GetVerticalWindow(x, size) return w.Proportion() } |