diff options
Diffstat (limited to 'pkg/hocr/lines.go')
| -rw-r--r-- | pkg/hocr/lines.go | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/pkg/hocr/lines.go b/pkg/hocr/lines.go index e90b0a8..d2983be 100644 --- a/pkg/hocr/lines.go +++ b/pkg/hocr/lines.go @@ -5,7 +5,9 @@ package hocr import ( "image" - "image/png" + "image/draw" + _ "image/jpeg" + _ "image/png" "io/ioutil" "log" "os" @@ -48,7 +50,7 @@ func getLineText(l OcrLine) (string) { return linetext } -func parseLineDetails(h Hocr, i image.Image, name string) (line.Details, error) { +func parseLineDetails(h Hocr, i *image.Gray, name string) (line.Details, error) { lines := make(line.Details, 0) for _, l := range h.Lines { @@ -75,7 +77,7 @@ func parseLineDetails(h Hocr, i image.Image, name string) (line.Details, error) 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])) + imgd.Img = i.SubImage(image.Rect(coords[0], coords[1], coords[2], coords[3])) ln.Img = imgd } lines = append(lines, ln) @@ -97,20 +99,25 @@ func GetLineDetails(hocrfn string) (line.Details, error) { } var img image.Image + var gray *image.Gray 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) + img, _, err = image.Decode(pngf) if err != nil { log.Println("Warning: can't load image %s\n", pngfn) + } else { + b := img.Bounds() + gray = image.NewGray(image.Rect(0, 0, b.Dx(), b.Dy())) + draw.Draw(gray, b, img, b.Min, draw.Src) } } n := strings.Replace(filepath.Base(hocrfn), ".hocr", "", 1) - return parseLineDetails(h, img, n) + return parseLineDetails(h, gray, n) } func GetLineBasics(hocrfn string) (line.Details, error) { |