From 5459fbca17efad20e433aeaa442df14831f8ac82 Mon Sep 17 00:00:00 2001
From: Nick White <git@njw.name>
Date: Tue, 25 Jun 2019 15:31:22 +0100
Subject: Experimentally adjust wipe threshold according to binarisation level
---
preproc/cmd/preprocmulti/main.go | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/preproc/cmd/preprocmulti/main.go b/preproc/cmd/preprocmulti/main.go
index 9c979c3..71bf7d5 100644
--- a/preproc/cmd/preprocmulti/main.go
+++ b/preproc/cmd/preprocmulti/main.go
@@ -25,7 +25,7 @@ func main() {
ksizes := []float64{0.2, 0.3, 0.4, 0.5, 0.6}
flag.Usage = func() {
- fmt.Fprintf(os.Stderr, "Usage: preprocmulti [-bt bintype] [-bw winsize] [-m minperc] [-nowipe] [-wt wipethresh] [-ws wipesize] inimg outbase\n")
+ 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)
@@ -36,7 +36,6 @@ func main() {
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.")
- thresh := flag.Float64("wt", 0.05, "Threshold for the wiping algorithm to determine the proportion of black pixels below which a window is determined to be the edge.")
flag.Parse()
if flag.NArg() < 2 {
flag.Usage()
@@ -82,7 +81,7 @@ func main() {
if ! *nowipe {
log.Print("Wiping sides")
- clean = preproc.Wipe(threshimg.(*image.Gray), *wipewsize, *thresh, *min)
+ clean = preproc.Wipe(threshimg.(*image.Gray), *wipewsize, k * 0.02, *min)
} else {
clean = threshimg
}
--
cgit v1.2.1-24-ge1ad