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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.
// pagegraph creates a graph showing the average confidence of each
// word in a page of hOCR.
package main
import (
"flag"
"fmt"
"log"
"os"
"path/filepath"
"rescribe.xyz/bookpipeline"
"rescribe.xyz/utils/pkg/hocr"
)
const usage = `Usage: pagegraph [-l] file.hocr graph.png
pagegraph creates a graph showing average confidence of each
word in a page of hOCR.
`
func main() {
lines := flag.Bool("l", false, "use line confidence instead of word confidence")
flag.Usage = func() {
fmt.Fprintln(flag.CommandLine.Output(), usage)
flag.PrintDefaults()
}
flag.Parse()
if flag.NArg() != 2 {
flag.Usage()
return
}
var confs []*bookpipeline.Conf
var xlabel string
if *lines {
linedetails, err := hocr.GetLineDetails(flag.Arg(0))
if err != nil {
log.Fatal(err)
}
for n, l := range linedetails {
c := bookpipeline.Conf{
Conf: l.Avgconf * 100,
Path: fmt.Sprintf("%d_line", n),
}
confs = append(confs, &c)
}
xlabel = "Line number"
} else {
wordconfs, err := hocr.GetWordConfs(flag.Arg(0))
if err != nil {
log.Fatal(err)
}
for n, wc := range wordconfs {
c := bookpipeline.Conf{
Conf: wc,
Path: fmt.Sprintf("%d_word", n),
}
confs = append(confs, &c)
}
xlabel = "Word number"
}
// Structure to fit what bookpipeline.Graph needs
// TODO: probably reorganise bookpipeline to just need []*Conf
cconfs := make(map[string]*bookpipeline.Conf)
for _, c := range confs {
cconfs[c.Path] = c
}
fn := flag.Arg(1)
f, err := os.Create(fn)
if err != nil {
log.Fatalln("Error creating file", fn, err)
}
defer f.Close()
err = bookpipeline.GraphOpts(cconfs, filepath.Base(flag.Arg(0)), xlabel, false, f)
if err != nil {
log.Fatalln("Error creating graph", err)
}
}
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