summaryrefslogtreecommitdiff
path: root/preproc/sauvola_test.go
diff options
context:
space:
mode:
authorNick White <git@njw.name>2019-10-08 12:52:33 +0100
committerNick White <git@njw.name>2019-10-08 12:52:33 +0100
commit7482157a03ed3e9d7f45e54a126b391001f34948 (patch)
tree52f87b9ca159fe4c04a0349de95ea9de82692b3c /preproc/sauvola_test.go
parentd43c11bf653bfe3c1ad1ed277f1ec08bf155cf98 (diff)
Separate out bookpipeline from catch-all go.git repo, and rename to rescribe.xyz/bookpipeline
The dependencies from the go.git repo will follow in due course.
Diffstat (limited to 'preproc/sauvola_test.go')
-rw-r--r--preproc/sauvola_test.go70
1 files changed, 0 insertions, 70 deletions
diff --git a/preproc/sauvola_test.go b/preproc/sauvola_test.go
deleted file mode 100644
index 2331e10..0000000
--- a/preproc/sauvola_test.go
+++ /dev/null
@@ -1,70 +0,0 @@
-package preproc
-
-import (
- "flag"
- "fmt"
- "image"
- "image/png"
- "os"
- "testing"
-)
-
-func TestBinarization(t *testing.T) {
- var slow = flag.Bool("slow", false, "include slow tests")
- var update = flag.Bool("updatesauvola", false, "update golden files")
-
- cases := []struct {
- name string
- orig string
- golden string
- 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},
- {"integralsauvola", "testdata/pg1.png", "testdata/pg1_integralsauvola_k0.3_w19.png", 0.3, 19},
- {"sauvola", "testdata/pg1.png", "testdata/pg1_sauvola_k0.5_w41.png", 0.5, 41},
- {"sauvola", "testdata/pg1.png", "testdata/pg1_sauvola_k0.5_w19.png", 0.5, 19},
- {"sauvola", "testdata/pg1.png", "testdata/pg1_sauvola_k0.3_w19.png", 0.3, 19},
- }
-
- for _, c := range cases {
- t.Run(fmt.Sprintf("%s_%0.1f_%d", c.name, c.ksize, c.wsize), func(t *testing.T) {
- var actual *image.Gray
- orig, err := decode(c.orig)
- if err != nil {
- t.Fatalf("Could not open file %s: %v\n", c.orig, err)
- }
- switch c.name {
- case "integralsauvola":
- actual = IntegralSauvola(orig, c.ksize, c.wsize)
- case "sauvola":
- if *slow {
- actual = Sauvola(orig, c.ksize, c.wsize)
- } else {
- t.Skip("Skipping slow test; use -slow to run it.\n")
- }
- default:
- t.Fatalf("No method %s\n", c.name)
- }
- if *update {
- f, err := os.Create(c.golden)
- defer f.Close()
- if err != nil {
- t.Fatalf("Could not open file %s to update: %v\n", c.golden, err)
- }
- err = png.Encode(f, actual)
- if err != nil {
- t.Fatalf("Could not encode update of %s: %v\n", c.golden, err)
- }
- }
- golden, err := decode(c.golden)
- if err != nil {
- t.Fatalf("Could not open file %s: %v\n", c.golden, err)
- }
- if !imgsequal(golden, actual) {
- t.Errorf("Binarized %s differs to %s\n", c.orig, c.golden)
- }
- })
- }
-}