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-rw-r--r--bucket-lines/bucket-lines.go105
1 files changed, 105 insertions, 0 deletions
diff --git a/bucket-lines/bucket-lines.go b/bucket-lines/bucket-lines.go
new file mode 100644
index 0000000..ad73fcd
--- /dev/null
+++ b/bucket-lines/bucket-lines.go
@@ -0,0 +1,105 @@
+package main
+
+import (
+ "flag"
+ "fmt"
+ "image/png"
+ "io/ioutil"
+ "log"
+ "os"
+ "path/filepath"
+ "strings"
+
+ "git.rescribe.xyz/testingtools/parse"
+ "git.rescribe.xyz/testingtools/parse/hocr"
+ "git.rescribe.xyz/testingtools/parse/prob"
+)
+
+// TODO: maybe move this into hocr.go
+func detailsFromHocr(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() {
+ // TODO: Allow different specs to be used for .prob vs .hocr. Do this
+ // by adding a field to LineDetails that is linked to a named
+ // BucketSpecs.
+ b := parse.BucketSpecs{
+ // minimum confidence, name
+ { 0, "bad" },
+ { 0.95, "95to98" },
+ { 0.98, "98plus" },
+ }
+
+ flag.Usage = func() {
+ fmt.Fprintf(os.Stderr, "Usage: bucket-lines [-d dir] [hocr1] [prob1] [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\n")
+ fmt.Fprintf(os.Stderr, "Both .hocr and .prob files can be processed.\n\n")
+ fmt.Fprintf(os.Stderr, "For .hocr files, the x_wconf data is used to calculate confidence.\n\n")
+ fmt.Fprintf(os.Stderr, "The .prob files are generated using ocropy-rpred's --probabilities\n")
+ fmt.Fprintf(os.Stderr, "option.\n\n")
+ fmt.Fprintf(os.Stderr, "The .prob and .hocr files are assumed to be in the same directory\n")
+ fmt.Fprintf(os.Stderr, "as the line's image and text files.\n\n")
+ flag.PrintDefaults()
+ }
+ dir := flag.String("d", "buckets", "Directory to store the buckets")
+ flag.Parse()
+ if flag.NArg() < 1 {
+ flag.Usage()
+ os.Exit(1)
+ }
+
+ var err error
+ lines := make(parse.LineDetails, 0)
+
+ for _, f := range flag.Args() {
+ var newlines parse.LineDetails
+ switch ext := filepath.Ext(f); ext {
+ case ".prob":
+ newlines, err = prob.GetLineDetails(f)
+ case ".hocr":
+ newlines, err = detailsFromHocr(f)
+ default:
+ log.Printf("Skipping file '%s' as it isn't a .prob or .hocr\n", 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)
+}