From 778fc08e5d4b58d457e1754325eb0ff4127ccf1d Mon Sep 17 00:00:00 2001 From: Nick White Date: Mon, 13 May 2019 17:41:30 +0100 Subject: Rename cleanup to wipe, and only export main function --- preproc/cmd/wipe/main.go | 56 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 preproc/cmd/wipe/main.go (limited to 'preproc/cmd/wipe') diff --git a/preproc/cmd/wipe/main.go b/preproc/cmd/wipe/main.go new file mode 100644 index 0000000..e735a0a --- /dev/null +++ b/preproc/cmd/wipe/main.go @@ -0,0 +1,56 @@ +package main + +// TODO: add minimum size variable (default ~30%?) + +import ( + "flag" + "fmt" + "image" + "image/draw" + _ "image/jpeg" + "image/png" + "log" + "os" + + "rescribe.xyz/go.git/preproc" +) + +func main() { + flag.Usage = func() { + fmt.Fprintf(os.Stderr, "Usage: wipe [-t thresh] [-w winsize] inimg outimg\n") + fmt.Fprintf(os.Stderr, "Wipes the sections of an image which are outside the content area.\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) + + clean := preproc.Wipe(gray, *wsize, *thresh) + + 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