summaryrefslogtreecommitdiff
path: root/binarize/binarize.go
diff options
context:
space:
mode:
authorNick White <git@njw.name>2019-01-25 15:08:06 +0000
committerNick White <git@njw.name>2019-01-25 15:08:06 +0000
commit524fd9bde90fbe9c6e985ead5e6eac284192f427 (patch)
tree6d6838830615b555b687eb8f264dd4fc90f4e711 /binarize/binarize.go
parent30c088b90e7b6a25d93cbdad7564ff063e62afd3 (diff)
Add simple Otsu binarize tool (written a while ago)
Diffstat (limited to 'binarize/binarize.go')
-rw-r--r--binarize/binarize.go38
1 files changed, 38 insertions, 0 deletions
diff --git a/binarize/binarize.go b/binarize/binarize.go
new file mode 100644
index 0000000..0290ef4
--- /dev/null
+++ b/binarize/binarize.go
@@ -0,0 +1,38 @@
+package main
+
+import (
+ "flag"
+ "fmt"
+ "log"
+ "os"
+
+ "github.com/Ernyoke/Imger/threshold"
+ "github.com/Ernyoke/Imger/imgio"
+)
+
+func main() {
+ flag.Usage = func() {
+ fmt.Fprintf(os.Stderr, "Usage: binarize inimg outimg\n")
+ flag.PrintDefaults()
+ }
+ flag.Parse()
+ if flag.NArg() < 2 {
+ flag.Usage()
+ os.Exit(1)
+ }
+
+ img, err := imgio.ImreadGray(flag.Arg(0))
+ if err != nil {
+ log.Fatalf("Could not read image %s\n", flag.Arg(0))
+ }
+
+ thresh, err := threshold.OtsuThreshold(img, threshold.ThreshBinary)
+ if err != nil {
+ log.Fatal("Error binarising image\n")
+ }
+
+ err = imgio.Imwrite(thresh, flag.Arg(1))
+ if err != nil {
+ log.Fatalf("Could not write image %s\n", flag.Arg(1))
+ }
+}