From d8ca7b584b693a2a61dd88767a81d99bc48aca32 Mon Sep 17 00:00:00 2001
From: Nick White <git@njw.name>
Date: Fri, 15 Feb 2019 17:47:57 +0000
Subject: Separate out binarize into a package, and start adding tests for it

---
 binarize/main.go | 70 --------------------------------------------------------
 1 file changed, 70 deletions(-)
 delete mode 100644 binarize/main.go

(limited to 'binarize/main.go')

diff --git a/binarize/main.go b/binarize/main.go
deleted file mode 100644
index ec99c09..0000000
--- a/binarize/main.go
+++ /dev/null
@@ -1,70 +0,0 @@
-package main
-
-// TODO: could look into other algorithms, see for examples see
-//       the README at https://github.com/brandonmpetty/Doxa
-
-import (
-	"flag"
-	"fmt"
-	"image"
-	"image/draw"
-	_ "image/jpeg"
-	"image/png"
-	"log"
-	"os"
-)
-
-// TODO: do more testing to see how good this assumption is
-func autowsize(bounds image.Rectangle) int {
-	return bounds.Dx() / 60
-}
-
-func main() {
-	flag.Usage = func() {
-		fmt.Fprintf(os.Stderr, "Usage: binarize [-w num] [-k num] inimg outimg\n")
-		flag.PrintDefaults()
-	}
-	wsize := flag.Int("w", 0, "Window size for sauvola algorithm. Set automatically based on resolution if not set.")
-	ksize := flag.Float64("k", 0.5, "K for sauvola algorithm. This controls the overall threshold level. Set it lower for very light text (try 0.1 or 0.2).")
-	flag.Parse()
-	if flag.NArg() < 2 {
-		flag.Usage()
-		os.Exit(1)
-	}
-
-	f, err := os.Open(flag.Arg(0))
-	defer f.Close()
-	if err != nil {
-		log.Fatalf("Could not open file %s: %v\n", flag.Arg(0), err)
-	}
-	img, _, err := image.Decode(f)
-	if err != nil {
-		log.Fatalf("Could not decode image: %v\n", err)
-	}
-	b := img.Bounds()
-	gray := image.NewGray(image.Rect(0, 0, b.Dx(), b.Dy()))
-	draw.Draw(gray, b, img, b.Min, draw.Src)
-
-	if *wsize == 0 {
-		*wsize = autowsize(b)
-		log.Printf("Set window size to %d\n", *wsize)
-	}
-
-	if *wsize % 2 == 0 {
-		*wsize++
-	}
-
-	// TODO: come up with a way to set a good ksize automatically
-
-	thresh := IntegralSauvola(gray, *ksize, *wsize)
-
-	f, err = os.Create(flag.Arg(1))
-	if err != nil {
-		log.Fatalf("Could not create file %s: %v\n", flag.Arg(1), err)
-	}
-	defer f.Close()
-	err = png.Encode(f, thresh)
-	if err != nil {
-		log.Fatalf("Could not encode image: %v\n", err)
-	}
-}
-- 
cgit v1.2.1-24-ge1ad