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// Copyright 2019 Nick White.
// Use of this source code is governed by the GPLv3
// license that can be found in the LICENSE file.
// wipe wipes sections of an image which are outside of an automatically
// determined content area
package main
import (
"flag"
"fmt"
"log"
"os"
"rescribe.xyz/preproc"
)
func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "Usage: wipe inimg outimg\n")
fmt.Fprintf(os.Stderr, "Wipes the sections of an image which are outside the content area.\n")
flag.PrintDefaults()
}
hmin := flag.Int("hm", 30, "Minimum percentage of the image width for the content width calculation to be considered valid.")
thresh := flag.Float64("ht", 0.05, "Threshold for the proportion of black pixels below which a window is determined to be the edge. Higher means more aggressive wiping.")
wsize := flag.Int("hw", 5, "Window size for mask finding algorithm.")
vmin := flag.Int("vm", 30, "Minimum percentage of the image height for the content width calculation to be considered valid.")
vthresh := flag.Float64("vt", 0.005, "Threshold for the proportion of black pixels below which a vertical wipe window is determined to be the edge. Higher means more aggressive wiping.")
vwsize := flag.Int("vw", 120, "Window size for vertical mask finding algorithm. Should be set to approximately line height + largest expected gap.")
flag.Parse()
if flag.NArg() < 2 {
flag.Usage()
os.Exit(1)
}
err := preproc.WipeFile(flag.Arg(0), flag.Arg(1), *wsize, *thresh, *hmin, *vwsize, *vthresh, *vmin)
if err != nil {
log.Fatalf("Failed to wipe image: %v\n", err)
}
}
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