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authorNick White <git@njw.name>2019-01-24 17:26:36 +0000
committerNick White <git@njw.name>2019-01-24 17:26:36 +0000
commit010255d2c19bbd06ca7e5ce92d8f98f3c12e0ad3 (patch)
tree383ca59060a5b2211996f514019befbb73d627ca /bucket-lines-hocr
parent035bd3e8ed1e4660be980225a06f886d7a9febcd (diff)
Add -d to -hocr tool, and improve documentation
Diffstat (limited to 'bucket-lines-hocr')
-rw-r--r--bucket-lines-hocr/bucket-lines-hocr.go91
1 files changed, 91 insertions, 0 deletions
diff --git a/bucket-lines-hocr/bucket-lines-hocr.go b/bucket-lines-hocr/bucket-lines-hocr.go
new file mode 100644
index 0000000..b35c824
--- /dev/null
+++ b/bucket-lines-hocr/bucket-lines-hocr.go
@@ -0,0 +1,91 @@
+package main
+
+// TODO: merge with -prob, using filename extension to determine what to do for each file
+
+import (
+ "flag"
+ "fmt"
+ "image/png"
+ "io/ioutil"
+ "log"
+ "os"
+ "path/filepath"
+ "strings"
+
+ "git.rescribe.xyz/testingtools/parse"
+ "git.rescribe.xyz/testingtools/parse/hocr"
+)
+
+func detailsFromFile(f string) (parse.LineDetails, error) {
+ var newlines parse.LineDetails
+
+ file, err := ioutil.ReadFile(f)
+ if err != nil {
+ return newlines, err
+ }
+
+ h, err := hocr.Parse(file)
+ if err != nil {
+ return newlines, err
+ }
+
+ pngfn := strings.Replace(f, ".hocr", ".png", 1)
+ pngf, err := os.Open(pngfn)
+ if err != nil {
+ return newlines, err
+ }
+ defer pngf.Close()
+ img, err := png.Decode(pngf)
+ if err != nil {
+ return newlines, err
+ }
+
+ n := strings.Replace(filepath.Base(f), ".hocr", "", 1)
+ return hocr.GetLineDetails(h, img, n)
+}
+
+func main() {
+ b := parse.BucketSpecs{
+ // minimum confidence, name
+ { 0, "bad" },
+ { 0.95, "95to98" },
+ { 0.98, "98plus" },
+ }
+
+ flag.Usage = func() {
+ fmt.Fprintf(os.Stderr, "Usage: bucket-lines-hocr [-d dir] hocr1 [hocr2] [...]\n")
+ fmt.Fprintf(os.Stderr, "Copies image-text line pairs into different directories according\n")
+ fmt.Fprintf(os.Stderr, "to the average character probability for the line.\n")
+ fmt.Fprintf(os.Stderr, "This uses the x_wconf data in .hocr files, which it assumes will be.\n")
+ fmt.Fprintf(os.Stderr, "in the same directory as the line's image and text files. It can\n")
+ fmt.Fprintf(os.Stderr, "handle hocr where each character is tagged separately and hocr where\n")
+ fmt.Fprintf(os.Stderr, "only whole words are tagged.\n")
+ flag.PrintDefaults()
+ }
+ dir := flag.String("d", "buckets", "Directory to store the buckets")
+ flag.Parse()
+ if flag.NArg() < 1 {
+ flag.Usage()
+ os.Exit(1)
+ }
+
+ lines := make(parse.LineDetails, 0)
+
+ for _, f := range flag.Args() {
+ newlines, err := detailsFromFile(f)
+ if err != nil {
+ log.Fatal(err)
+ }
+
+ for _, l := range newlines {
+ lines = append(lines, l)
+ }
+ }
+
+ stats, err := parse.BucketUp(lines, b, *dir)
+ if err != nil {
+ log.Fatal(err)
+ }
+
+ parse.PrintBucketStats(os.Stdout, stats)
+}