From a931288d3e813d069a2b6b010e5af4d73d308cf2 Mon Sep 17 00:00:00 2001 From: Nick White Date: Mon, 13 May 2019 17:31:26 +0100 Subject: Rename cleanup package to preproc, and add basic cmd version --- preproc/cmd/cleanup/main.go | 62 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 preproc/cmd/cleanup/main.go (limited to 'preproc/cmd/cleanup') diff --git a/preproc/cmd/cleanup/main.go b/preproc/cmd/cleanup/main.go new file mode 100644 index 0000000..7ea0c84 --- /dev/null +++ b/preproc/cmd/cleanup/main.go @@ -0,0 +1,62 @@ +package main + +// TODO: add minimum size variable (default ~30%?) +// TODO: make into a small library +// TODO: have the integral image specific stuff done by interface functions + +import ( + "flag" + "fmt" + "image" + "image/draw" + _ "image/jpeg" + "image/png" + "log" + "os" + + "rescribe.xyz/go.git/binarize" + "rescribe.xyz/go.git/preproc" +) + +func main() { + flag.Usage = func() { + fmt.Fprintf(os.Stderr, "Usage: cleanup [-t thresh] [-w winsize] inimg outimg\n") + flag.PrintDefaults() + } + wsize := flag.Int("w", 5, "Window size for mask finding algorithm.") + thresh := flag.Float64("t", 0.05, "Threshold for the proportion of black pixels below which a window is determined to be the edge.") + 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) + + integral := binarize.Integralimg(gray) + + lowedge, highedge := preproc.Findedges(integral, *wsize, *thresh) + + clean := preproc.Wipesides(gray, lowedge, highedge) + + 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, clean) + if err != nil { + log.Fatalf("Could not encode image: %v\n", err) + } +} -- cgit v1.2.1-24-ge1ad