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Diffstat (limited to 'lib')
-rw-r--r--lib/hocr/hocr.go129
-rw-r--r--lib/hocr/lines.go131
-rw-r--r--lib/line/line.go57
-rw-r--r--lib/prob/prob.go69
4 files changed, 0 insertions, 386 deletions
diff --git a/lib/hocr/hocr.go b/lib/hocr/hocr.go
deleted file mode 100644
index dcd0494..0000000
--- a/lib/hocr/hocr.go
+++ /dev/null
@@ -1,129 +0,0 @@
-package hocr
-
-import (
- "encoding/xml"
- "errors"
- "io/ioutil"
- "regexp"
- "strconv"
- "strings"
-)
-
-type Hocr struct {
- Lines []OcrLine `xml:"body>div>div>p>span"`
-}
-
-type OcrLine struct {
- Class string `xml:"class,attr"`
- Id string `xml:"id,attr"`
- Title string `xml:"title,attr"`
- Words []OcrWord `xml:"span"`
- Text string `xml:",chardata"`
-}
-
-type OcrWord struct {
- Class string `xml:"class,attr"`
- Id string `xml:"id,attr"`
- Title string `xml:"title,attr"`
- Chars []OcrChar `xml:"span"`
- Text string `xml:",chardata"`
-}
-
-type OcrChar struct {
- Class string `xml:"class,attr"`
- Id string `xml:"id,attr"`
- Title string `xml:"title,attr"`
- Chars []OcrChar `xml:"span"`
- Text string `xml:",chardata"`
-}
-
-// Returns the confidence for a word based on its x_wconf value
-func wordConf(s string) (float64, error) {
- re, err := regexp.Compile(`x_wconf ([0-9.]+)`)
- if err != nil {
- return 0.0, err
- }
- conf := re.FindStringSubmatch(s)
- return strconv.ParseFloat(conf[1], 64)
-}
-
-func boxCoords(s string) ([4]int, error) {
- var coords [4]int
- re, err := regexp.Compile(`bbox ([0-9]+) ([0-9]+) ([0-9]+) ([0-9]+)`)
- if err != nil {
- return coords, err
- }
- coordstr := re.FindStringSubmatch(s)
- for i := range coords {
- c, err := strconv.Atoi(coordstr[i+1])
- if err != nil {
- return coords, err
- }
- coords[i] = c
- }
- return coords, nil
-}
-
-func noText(s string) bool {
- t := strings.Trim(s, " \n")
- return len(t) == 0
-}
-
-func Parse(b []byte) (Hocr, error) {
- var hocr Hocr
-
- err := xml.Unmarshal(b, &hocr)
- if err != nil {
- return hocr, err
- }
-
- return hocr, nil
-}
-
-func GetText(hocrfn string) (string, error) {
- var s string
-
- file, err := ioutil.ReadFile(hocrfn)
- if err != nil {
- return s, err
- }
-
- h, err := Parse(file)
- if err != nil {
- return s, err
- }
-
-
- for _, l := range h.Lines {
- s += getLineText(l)
- }
- return s, nil
-}
-
-func GetAvgConf(hocrfn string) (float64, error) {
- file, err := ioutil.ReadFile(hocrfn)
- if err != nil {
- return 0, err
- }
-
- h, err := Parse(file)
- if err != nil {
- return 0, err
- }
-
- var total, num float64
- for _, l := range h.Lines {
- for _, w := range l.Words {
- c, err := wordConf(w.Title)
- if err != nil {
- return 0, err
- }
- total += c
- num++
- }
- }
- if num == 0 {
- return 0, errors.New("No words found")
- }
- return total / num, nil
-}
diff --git a/lib/hocr/lines.go b/lib/hocr/lines.go
deleted file mode 100644
index 74e8f9a..0000000
--- a/lib/hocr/lines.go
+++ /dev/null
@@ -1,131 +0,0 @@
-package hocr
-
-// TODO: Parse line name to zero pad line numbers, so they can
-// be sorted easily
-
-import (
- "image"
- "image/png"
- "io/ioutil"
- "log"
- "os"
- "path/filepath"
- "strings"
-
- "rescribe.xyz/go.git/lib/line"
-)
-
-func getLineText(l OcrLine) (string) {
- linetext := ""
-
- linetext = l.Text
- if noText(linetext) {
- linetext = ""
- for _, w := range l.Words {
- if w.Class != "ocrx_word" {
- continue
- }
- linetext += w.Text + " "
- }
- }
- if noText(linetext) {
- linetext = ""
- for _, w := range l.Words {
- if w.Class != "ocrx_word" {
- continue
- }
- for _, c := range w.Chars {
- if c.Class != "ocrx_cinfo" {
- continue
- }
- linetext += c.Text
- }
- linetext += " "
- }
- }
- linetext = strings.TrimRight(linetext, " ")
- linetext += "\n"
- return linetext
-}
-
-func parseLineDetails(h Hocr, i image.Image, name string) (line.Details, error) {
- lines := make(line.Details, 0)
-
- for _, l := range h.Lines {
- totalconf := float64(0)
- num := 0
- for _, w := range l.Words {
- c, err := wordConf(w.Title)
- if err != nil {
- return lines, err
- }
- num++
- totalconf += c
- }
-
- coords, err := boxCoords(l.Title)
- if err != nil {
- return lines, err
- }
-
- var ln line.Detail
- ln.Name = l.Id
- ln.Avgconf = (totalconf / float64(num)) / 100
- ln.Text = getLineText(l)
- ln.OcrName = name
- if i != nil {
- var imgd line.ImgDirect
- imgd.Img = i.(*image.Gray).SubImage(image.Rect(coords[0], coords[1], coords[2], coords[3]))
- ln.Img = imgd
- }
- lines = append(lines, ln)
- }
- return lines, nil
-}
-
-func GetLineDetails(hocrfn string) (line.Details, error) {
- var newlines line.Details
-
- file, err := ioutil.ReadFile(hocrfn)
- if err != nil {
- return newlines, err
- }
-
- h, err := Parse(file)
- if err != nil {
- return newlines, err
- }
-
- var img image.Image
- pngfn := strings.Replace(hocrfn, ".hocr", ".png", 1)
- pngf, err := os.Open(pngfn)
- if err != nil {
- log.Println("Warning: can't open image %s\n", pngfn)
- } else {
- defer pngf.Close()
- img, err = png.Decode(pngf)
- if err != nil {
- log.Println("Warning: can't load image %s\n", pngfn)
- }
- }
-
- n := strings.Replace(filepath.Base(hocrfn), ".hocr", "", 1)
- return parseLineDetails(h, img, n)
-}
-
-func GetLineBasics(hocrfn string) (line.Details, error) {
- var newlines line.Details
-
- file, err := ioutil.ReadFile(hocrfn)
- if err != nil {
- return newlines, err
- }
-
- h, err := Parse(file)
- if err != nil {
- return newlines, err
- }
-
- n := strings.Replace(filepath.Base(hocrfn), ".hocr", "", 1)
- return parseLineDetails(h, nil, n)
-}
diff --git a/lib/line/line.go b/lib/line/line.go
deleted file mode 100644
index d4e3e44..0000000
--- a/lib/line/line.go
+++ /dev/null
@@ -1,57 +0,0 @@
-package line
-
-import (
- "image"
- "image/png"
- "io"
- "os"
-)
-
-type Detail struct {
- Name string
- Avgconf float64
- Img CopyableImg
- Text string
- OcrName string
-}
-
-type CopyableImg interface {
- CopyLineTo(io.Writer) error
-}
-
-type Details []Detail
-
-func (l Details) Len() int { return len(l) }
-func (l Details) Less(i, j int) bool { return l[i].Avgconf < l[j].Avgconf }
-func (l Details) Swap(i, j int) { l[i], l[j] = l[j], l[i] }
-
-// This is an implementation of the CopyableImg interface that
-// stores the image directly as an image.Image
-type ImgDirect struct {
- Img image.Image
-}
-
-func (i ImgDirect) CopyLineTo(w io.Writer) error {
- err := png.Encode(w, i.Img)
- if err != nil {
- return err
- }
- return nil
-}
-
-// This is an implementation of the CopyableImg interface that
-// stores the path of an image
-type ImgPath struct {
- Path string
-}
-
-func (i ImgPath) CopyLineTo(w io.Writer) error {
- f, err := os.Open(i.Path)
- if err != nil {
- return err
- }
- defer f.Close()
-
- _, err = io.Copy(w, f)
- return err
-}
diff --git a/lib/prob/prob.go b/lib/prob/prob.go
deleted file mode 100644
index 31a484d..0000000
--- a/lib/prob/prob.go
+++ /dev/null
@@ -1,69 +0,0 @@
-package prob
-
-import (
- "io/ioutil"
- "path/filepath"
- "strconv"
- "strings"
-
- "rescribe.xyz/go.git/lib/line"
-)
-
-func getLineAvg(f string) (float64, error) {
- totalconf := float64(0)
- num := 0
-
- prob, err := ioutil.ReadFile(f)
- if err != nil {
- return 0, err
- }
-
- for _, l := range strings.Split(string(prob), "\n") {
- fields := strings.Fields(l)
-
- if len(fields) == 2 {
- conf, err := strconv.ParseFloat(fields[1], 64)
- if err != nil {
- continue
- }
- totalconf += conf
- num += 1
- }
- }
- if num <= 0 {
- return 0, nil
- }
- avg := totalconf / float64(num)
- return avg, nil
-}
-
-// Note this only processes one line at a time
-func GetLineDetails(probfn string) (line.Details, error) {
- var l line.Detail
- lines := make(line.Details, 0)
-
- avg, err := getLineAvg(probfn)
- if err != nil {
- return lines, err
- }
-
- filebase := strings.Replace(probfn, ".prob", "", 1)
-
- txt, err := ioutil.ReadFile(filebase + ".txt")
- if err != nil {
- return lines, err
- }
-
- l.Name = filepath.Base(filebase)
- l.Avgconf = avg
- l.Text = string(txt)
- l.OcrName = filepath.Base(filepath.Dir(filebase))
-
- var imgfn line.ImgPath
- imgfn.Path = filebase + ".bin.png"
- l.Img = imgfn
-
- lines = append(lines, l)
-
- return lines, nil
-}
generated by cgit v1.2.1-24-ge1ad (git 2.21.0) at 2024-05-10 15:11:50 +0000