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-rw-r--r--bucket-lines/bucket.go129
1 files changed, 129 insertions, 0 deletions
diff --git a/bucket-lines/bucket.go b/bucket-lines/bucket.go
new file mode 100644
index 0000000..5d9271a
--- /dev/null
+++ b/bucket-lines/bucket.go
@@ -0,0 +1,129 @@
+package main
+
+import (
+ "fmt"
+ "io"
+ "path/filepath"
+ "os"
+ "sort"
+ "strconv"
+
+ "git.rescribe.xyz/testingtools/lib/line"
+)
+
+type BucketSpec struct {
+ Min float64
+ Name string
+}
+type BucketSpecs []BucketSpec
+func (b BucketSpecs) Len() int { return len(b) }
+func (b BucketSpecs) Swap(i, j int) { b[i], b[j] = b[j], b[i] }
+func (b BucketSpecs) Less(i, j int) bool { return b[i].Min < b[j].Min }
+
+type BucketStat struct {
+ name string
+ num int
+}
+type BucketStats []BucketStat
+func (b BucketStats) Len() int { return len(b) }
+func (b BucketStats) Swap(i, j int) { b[i], b[j] = b[j], b[i] }
+func (b BucketStats) Less(i, j int) bool { return b[i].num < b[j].num }
+
+// Copies the image and text for a line into a directory based on
+// the line confidence, as defined by the buckets struct
+func bucketLine(l line.Detail, buckets BucketSpecs, dirname string) (string, error) {
+ var bucket string
+
+ todir := ""
+ for _, b := range buckets {
+ if l.Avgconf >= b.Min {
+ todir = b.Name
+ bucket = b.Name
+ }
+ }
+
+ if todir == "" {
+ return bucket, nil
+ }
+
+ avgstr := strconv.FormatFloat(l.Avgconf, 'G', -1, 64)
+ if len(avgstr) > 2 {
+ avgstr = avgstr[2:]
+ }
+
+ base := filepath.Join(dirname, todir, filepath.Base(l.OcrName) + "_" + l.Name + "_" + avgstr)
+
+ err := os.MkdirAll(filepath.Join(dirname, todir), 0700)
+ if err != nil {
+ return bucket, err
+ }
+
+ f, err := os.Create(base + ".png")
+ if err != nil {
+ return bucket, err
+ }
+ defer f.Close()
+
+ err = l.Img.CopyLineTo(f)
+ if err != nil {
+ return bucket, err
+ }
+
+ f, err = os.Create(base + ".txt")
+ if err != nil {
+ return bucket, err
+ }
+ defer f.Close()
+
+ _, err = io.WriteString(f, l.Text)
+ if err != nil {
+ return bucket, err
+ }
+
+ return bucket, err
+}
+
+// Copies line images and text into directories based on their
+// confidence, as defined by the buckets struct, and returns
+// statistics of whire lines went in the process.
+func BucketUp(lines line.Details, buckets BucketSpecs, dirname string) (BucketStats, error) {
+ var all []string
+ var stats BucketStats
+
+ sort.Sort(lines)
+ sort.Sort(buckets)
+ for _, l := range lines {
+ bname, err := bucketLine(l, buckets, dirname)
+ if err != nil {
+ return stats, err
+ }
+ all = append(all, bname)
+ }
+
+ for _, b := range all {
+ i := sort.Search(len(stats), func(i int) bool { return stats[i].name == b })
+ if i == len(stats) {
+ newstat := BucketStat { b, 0 }
+ stats = append(stats, newstat)
+ i = len(stats) - 1
+ }
+ stats[i].num++
+ }
+
+ return stats, nil
+}
+
+// Prints statistics of where lines went when bucketing
+func PrintBucketStats(w io.Writer, stats BucketStats) {
+ var total int
+ for _, s := range stats {
+ total += s.num
+ }
+
+ fmt.Fprintf(w, "Copied %d lines\n", total)
+ fmt.Fprintf(w, "---------------------------------\n")
+ sort.Sort(stats)
+ for _, s := range stats {
+ fmt.Fprintf(w, "Lines in %7s: %2d%%\n", s.name, 100 * s.num / total)
+ }
+}