From e320e069844b8f9c6e5d7e4e407cc90dff3b0f04 Mon Sep 17 00:00:00 2001
From: Nick White <git@njw.name>
Date: Wed, 26 Feb 2020 16:53:14 +0000
Subject: Move things around so that integralimg is in its own repository

---
 cmd/preprocmulti/main.go | 105 -----------------------------------------------
 1 file changed, 105 deletions(-)
 delete mode 100644 cmd/preprocmulti/main.go

(limited to 'cmd/preprocmulti/main.go')

diff --git a/cmd/preprocmulti/main.go b/cmd/preprocmulti/main.go
deleted file mode 100644
index aeac767..0000000
--- a/cmd/preprocmulti/main.go
+++ /dev/null
@@ -1,105 +0,0 @@
-// Copyright 2019 Nick White.
-// Use of this source code is governed by the GPLv3
-// license that can be found in the LICENSE file.
-
-package main
-
-// TODO: come up with a way to set a good ksize automatically
-
-import (
-	"flag"
-	"fmt"
-	"image"
-	"image/draw"
-	_ "image/jpeg"
-	"image/png"
-	"log"
-	"os"
-
-	"rescribe.xyz/preproc"
-	"rescribe.xyz/preproc/integralimg"
-)
-
-// TODO: do more testing to see how good this assumption is
-func autowsize(bounds image.Rectangle) int {
-	return bounds.Dx() / 60
-}
-
-func main() {
-	ksizes := []float64{0.1, 0.2, 0.4, 0.5}
-
-	flag.Usage = func() {
-		fmt.Fprintf(os.Stderr, "Usage: preprocmulti [-bt bintype] [-bw winsize] [-m minperc] [-nowipe] [-ws wipesize] inimg outbase\n")
-		fmt.Fprintf(os.Stderr, "Binarize and preprocess an image, with multiple binarisation levels,\n")
-		fmt.Fprintf(os.Stderr, "saving images to outbase_bin{k}.png.\n")
-		fmt.Fprintf(os.Stderr, "Binarises with these levels for k: %v.\n", ksizes)
-		flag.PrintDefaults()
-	}
-	binwsize := flag.Int("bw", 0, "Window size for sauvola binarization algorithm. Set automatically based on resolution if not set.")
-	btype := flag.String("bt", "binary", "Type of binarization threshold. binary or zeroinv are currently implemented.")
-	min := flag.Int("m", 30, "Minimum percentage of the image width for the content width calculation to be considered valid.")
-	nowipe := flag.Bool("nowipe", false, "Disable wiping completely.")
-	wipewsize := flag.Int("ws", 5, "Window size for wiping algorithm.")
-	flag.Parse()
-	if flag.NArg() < 2 {
-		flag.Usage()
-		os.Exit(1)
-	}
-
-	log.Printf("Opening %s\n", flag.Arg(0))
-	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 *binwsize == 0 {
-		*binwsize = autowsize(b)
-	}
-
-	if *binwsize%2 == 0 {
-		*binwsize++
-	}
-
-	var clean, threshimg image.Image
-	log.Print("Precalculating integral images")
-	integrals := integralimg.ToAllIntegralImg(gray)
-
-	for _, k := range ksizes {
-		log.Print("Binarising")
-		threshimg = preproc.PreCalcedSauvola(integrals, gray, k, *binwsize)
-
-		if *btype == "zeroinv" {
-			threshimg, err = preproc.BinToZeroInv(threshimg.(*image.Gray), img.(*image.RGBA))
-			if err != nil {
-				log.Fatal(err)
-			}
-		}
-
-		if !*nowipe {
-			log.Print("Wiping sides")
-			clean = preproc.Wipe(threshimg.(*image.Gray), *wipewsize, k*0.02, *min)
-		} else {
-			clean = threshimg
-		}
-
-		savefn := fmt.Sprintf("%s_bin%0.1f.png", flag.Arg(1), k)
-		log.Printf("Saving %s\n", savefn)
-		f, err = os.Create(savefn)
-		if err != nil {
-			log.Fatalf("Could not create file %s: %v\n", savefn, err)
-		}
-		defer f.Close()
-		err = png.Encode(f, clean)
-		if err != nil {
-			log.Fatalf("Could not encode image: %v\n", err)
-		}
-	}
-}
-- 
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