From 787d63fc5d13c6250bd33da5a8e1eadbe86188cd Mon Sep 17 00:00:00 2001 From: Nick White Date: Tue, 8 Oct 2019 15:37:07 +0100 Subject: Continue separating the repository; remove all but preproc, and move integralimg package under it --- preproc/cmd/preprocmulti/main.go | 101 --------------------------------------- 1 file changed, 101 deletions(-) delete mode 100644 preproc/cmd/preprocmulti/main.go (limited to 'preproc/cmd/preprocmulti') diff --git a/preproc/cmd/preprocmulti/main.go b/preproc/cmd/preprocmulti/main.go deleted file mode 100644 index c6c9fe4..0000000 --- a/preproc/cmd/preprocmulti/main.go +++ /dev/null @@ -1,101 +0,0 @@ -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/go.git/integralimg" - "rescribe.xyz/go.git/preproc" -) - -// 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) - } - } -} -- cgit v1.2.1-24-ge1ad