mirror of
https://github.com/qurator-spk/eynollah.git
synced 2026-07-26 05:29:16 +02:00
layout/writer/extract-images: also refactor page as dataclass…
use `Region` for page (Border) coordinates and skew angle (as for the other segment types), pass as mandatory arg to writer
This commit is contained in:
Robert Sachunsky
parent
147a86ba42
commit
f1505f5ae6
3 changed files with 45 additions and 67 deletions
|
|
@ -231,15 +231,16 @@ class EynollahImageExtractor(Eynollah):
|
|||
# Image Extraction Mode
|
||||
self.logger.info("Step 2/5: Image Extraction Mode")
|
||||
t1 = time.time()
|
||||
page_coord, cont_page, image_page, mask_page = self.extract_page(image)
|
||||
page_cont, image_page, _ = self.extract_page(image)
|
||||
page = Region(page_cont)
|
||||
|
||||
_, _, images_cont = self.get_early_layout(
|
||||
image['img_res'], num_col_classifier)
|
||||
self.logger.debug("Found %d images", len(images_cont))
|
||||
|
||||
# FIXME: post-hoc cropping (remove when models support it, and replace image['img_res'] with image_page)
|
||||
page_coord = np.array(page_coord)
|
||||
images_cont = [cont - page_coord[::2][::-1][np.newaxis, np.newaxis]
|
||||
page_box = cv2.boundingRect(page.contour)
|
||||
images_cont = [cont - [page_box[:2]]
|
||||
for cont in images_cont]
|
||||
if self.plotter:
|
||||
self.plotter.write_images_into_directory(images_cont, image_page,
|
||||
|
|
@ -250,9 +251,8 @@ class EynollahImageExtractor(Eynollah):
|
|||
# can be empty if above page frame
|
||||
images = [image for image in images if image.area]
|
||||
pcgts = writer.build_pagexml(
|
||||
page=page,
|
||||
num_col=num_col_classifier,
|
||||
page_coord=page_coord,
|
||||
page_contour=cont_page[0],
|
||||
images=images,
|
||||
)
|
||||
writer.write_pagexml(pcgts)
|
||||
|
|
|
|||
|
|
@ -74,7 +74,7 @@ from .utils import (
|
|||
is_image_filename,
|
||||
isNaN,
|
||||
crop_image_inside_box,
|
||||
box2rect,
|
||||
box2slice,
|
||||
find_num_col,
|
||||
otsu_copy_binary,
|
||||
seg_mask_label,
|
||||
|
|
@ -806,14 +806,13 @@ class Eynollah:
|
|||
return segmentation, confidence
|
||||
|
||||
def extract_page(self, image):
|
||||
cropped_page = img = image['img_res']
|
||||
page_cropped = img = image['img_res']
|
||||
h, w = img.shape[:2]
|
||||
page_coord = [0, h, 0, w]
|
||||
cont_page = [np.array([[[0, 0]],
|
||||
[[w, 0]],
|
||||
[[w, h]],
|
||||
[[0, h]]])]
|
||||
mask_page = np.ones((h, w), dtype=np.uint8)
|
||||
page_cont = np.array([[[0, 0]],
|
||||
[[w, 0]],
|
||||
[[w, h]],
|
||||
[[0, h]]])
|
||||
page_mask = np.ones((h, w), dtype=np.uint8)
|
||||
if not self.ignore_page_extraction:
|
||||
self.logger.debug("enter extract_page")
|
||||
#cv2.GaussianBlur(img, (5, 5), 0)
|
||||
|
|
@ -821,26 +820,13 @@ class Eynollah:
|
|||
contours, _ = cv2.findContours(prediction, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
|
||||
if len(contours):
|
||||
areas = np.array(list(map(cv2.contourArea, contours)))
|
||||
cnt = contours[np.argmax(areas)]
|
||||
cont_page = [cnt]
|
||||
x, y, w, h = cv2.boundingRect(cnt)
|
||||
#if x <= 30:
|
||||
#w += x
|
||||
#x = 0
|
||||
#if (self.image.shape[1] - (x + w)) <= 30:
|
||||
#w = w + (self.image.shape[1] - (x + w))
|
||||
#if y <= 30:
|
||||
#h = h + y
|
||||
#y = 0
|
||||
#if (self.image.shape[0] - (y + h)) <= 30:
|
||||
#h = h + (self.image.shape[0] - (y + h))
|
||||
box = [x, y, w, h]
|
||||
cropped_page, page_coord = crop_image_inside_box(box, img)
|
||||
mask_page = np.zeros((h, w), dtype=np.uint8)
|
||||
mask_page = cv2.fillPoly(mask_page, pts=[cnt - [x, y]], color=1)
|
||||
|
||||
page_cont = contours[np.argmax(areas)]
|
||||
box = (x, y, w, h) = cv2.boundingRect(page_cont)
|
||||
page_cropped = img[box2slice(box)]
|
||||
page_mask = np.zeros((h, w), dtype=np.uint8)
|
||||
page_mask = cv2.fillPoly(page_mask, pts=[page_cont - [x, y]], color=1)
|
||||
self.logger.debug("exit extract_page")
|
||||
return page_coord, cont_page, cropped_page, mask_page
|
||||
return page_cont, page_cropped, page_mask
|
||||
|
||||
def early_page_for_num_of_column_classification(self, img):
|
||||
if not self.ignore_page_extraction:
|
||||
|
|
@ -2075,7 +2061,8 @@ class Eynollah:
|
|||
self.logger.info(f"Enhancement complete ({time.time() - t0:.1f}s)")
|
||||
|
||||
t1 = time.time()
|
||||
page_coord, cont_page, image_page, mask_page = self.extract_page(image)
|
||||
page_cont, image_page, mask_page = self.extract_page(image)
|
||||
page = Region(page_cont)
|
||||
if not self.ignore_page_extraction:
|
||||
self.logger.debug("Cropped page is %dx%d", image_page.shape[1], image_page.shape[0])
|
||||
self.logger.info("Cropping took %.1fs", time.time() - t1)
|
||||
|
|
@ -2102,7 +2089,7 @@ class Eynollah:
|
|||
textlines_cont, textlines_conf,
|
||||
textlines_cx, textlines_cy, textlines_w_h)
|
||||
textregions = [
|
||||
TextRegion(cont_page, lines=[
|
||||
TextRegion(page.contour, lines=[
|
||||
Region(cont, conf=conf)
|
||||
for cont, conf in zip(textlines_cont, textlines_conf)])
|
||||
]
|
||||
|
|
@ -2110,9 +2097,8 @@ class Eynollah:
|
|||
self.logger.info("Basic processing complete")
|
||||
|
||||
pcgts = writer.build_pagexml(
|
||||
page=page,
|
||||
num_col=num_col_classifier,
|
||||
page_coord=page_coord,
|
||||
page_contour=cont_page[0],
|
||||
order_of_texts=[0],
|
||||
textregions=textregions,
|
||||
)
|
||||
|
|
@ -2153,19 +2139,19 @@ class Eynollah:
|
|||
if (abs(slope_deskew) > 45 and
|
||||
((text_regions_p == label_text).sum()) <= 0.3 * image_page.size):
|
||||
slope_deskew = 0
|
||||
page.skew = slope_deskew
|
||||
if self.plotter:
|
||||
self.plotter.save_deskewed_image(slope_deskew, image['img'], image['name'])
|
||||
t3 = time.time()
|
||||
self.logger.info("Deskewing took %.1fs", t3 - t2)
|
||||
|
||||
# FIXME: post-hoc cropping (remove when models support it, and replace image['img_res'] with image_page)
|
||||
page_coord = np.array(page_coord)
|
||||
page_box = (slice(*page_coord[:2]),
|
||||
slice(*page_coord[2:]))
|
||||
page_box = cv2.boundingRect(page.contour)
|
||||
seplines_conf = get_region_confidences(seplines_cont, regions_confidence)
|
||||
seplines = [Region(cont - page_coord[::2][::-1][np.newaxis, np.newaxis],
|
||||
seplines = [Region(cont - [page_box[:2]],
|
||||
conf=conf)
|
||||
for cont, conf in zip(seplines_cont, seplines_conf)]
|
||||
page_box = box2slice(page_box)
|
||||
regions_without_separators = regions_without_separators[page_box] * mask_page
|
||||
text_regions_p = text_regions_p[page_box] * mask_page
|
||||
textline_mask_tot_ea = textline_mask_tot_ea[page_box] * mask_page
|
||||
|
|
@ -2183,10 +2169,8 @@ class Eynollah:
|
|||
self.logger.info("No columns detected - generating empty PAGE-XML")
|
||||
|
||||
pcgts = writer.build_pagexml(
|
||||
page=page,
|
||||
num_col=0,
|
||||
page_coord=page_coord,
|
||||
page_contour=cont_page[0],
|
||||
page_skew=slope_deskew,
|
||||
)
|
||||
if writer.pcgts is None:
|
||||
writer.write_pagexml(pcgts)
|
||||
|
|
@ -2385,10 +2369,8 @@ class Eynollah:
|
|||
|
||||
self.logger.info("Step 5/5: Output Generation")
|
||||
pcgts = writer.build_pagexml(
|
||||
page=page,
|
||||
num_col=num_col_classifier,
|
||||
page_coord=page_coord,
|
||||
page_contour=cont_page[0],
|
||||
page_skew=slope_deskew,
|
||||
order_of_texts=order_text,
|
||||
textregions=textregions,
|
||||
textregions_h=textregions_h,
|
||||
|
|
|
|||
|
|
@ -5,6 +5,7 @@ import os.path
|
|||
import logging
|
||||
from typing import Optional, List, Tuple
|
||||
import numpy as np
|
||||
import cv2
|
||||
from shapely import affinity, clip_by_rect
|
||||
|
||||
from ocrd_utils import points_from_polygon
|
||||
|
|
@ -85,10 +86,8 @@ class EynollahXmlWriter:
|
|||
def build_pagexml(
|
||||
self,
|
||||
*,
|
||||
page: Region,
|
||||
num_col=1,
|
||||
page_coord: Optional[List[int]] = None,
|
||||
page_contour: Optional[np.ndarray] = None,
|
||||
page_skew: float = 0.,
|
||||
order_of_texts: List[int] = [],
|
||||
textregions: List[TextRegion] = [],
|
||||
textregions_h: List[TextRegion] = [],
|
||||
|
|
@ -104,16 +103,13 @@ class EynollahXmlWriter:
|
|||
# create the file structure
|
||||
pcgts = self.pcgts if self.pcgts else create_page_xml(
|
||||
self.image_filename, self.image_height, self.image_width)
|
||||
page = pcgts.get_Page()
|
||||
pcgts.Metadata.Comments = "num_col %d" % num_col
|
||||
page.set_custom('layout {num_col:%d;} ' % num_col)
|
||||
page.set_orientation(-page_skew)
|
||||
if page_contour is not None:
|
||||
page.set_Border(BorderType(Coords=CoordsType(points=self.calculate_points(page_contour))))
|
||||
if page_coord is None:
|
||||
offset = [0, 0]
|
||||
else:
|
||||
offset = [page_coord[2], page_coord[0]]
|
||||
pcgts.Page.set_custom('layout {num_col:%d;} ' % num_col)
|
||||
pcgts.Page.set_orientation(-page.skew)
|
||||
pcgts.Page.set_Border(BorderType(Coords=CoordsType(
|
||||
points=self.calculate_points(page.contour))))
|
||||
x, y, w, h = cv2.boundingRect(page.contour)
|
||||
offset = [x, y]
|
||||
counter = EynollahIdCounter()
|
||||
if len(order_of_texts):
|
||||
_counter_marginals = EynollahIdCounter(region_idx=len(order_of_texts))
|
||||
|
|
@ -121,7 +117,7 @@ class EynollahXmlWriter:
|
|||
for _ in marginals_left]
|
||||
id_of_marginalia_right = [_counter_marginals.next_region_id
|
||||
for _ in marginals_right]
|
||||
xml_reading_order(page, order_of_texts, id_of_marginalia_left, id_of_marginalia_right)
|
||||
xml_reading_order(pcgts.Page, order_of_texts, id_of_marginalia_left, id_of_marginalia_right)
|
||||
|
||||
for region in textregions:
|
||||
textregion = TextRegionType(
|
||||
|
|
@ -131,7 +127,7 @@ class EynollahXmlWriter:
|
|||
orientation=-region.skew
|
||||
)
|
||||
self.serialize_lines_in_region(textregion, offset, counter, region.lines)
|
||||
page.add_TextRegion(textregion)
|
||||
pcgts.Page.add_TextRegion(textregion)
|
||||
|
||||
self.logger.debug('len(textregions_h) %s', len(textregions_h))
|
||||
for region in textregions_h:
|
||||
|
|
@ -142,7 +138,7 @@ class EynollahXmlWriter:
|
|||
orientation=-region.skew
|
||||
)
|
||||
self.serialize_lines_in_region(textregion, offset, counter, region.lines)
|
||||
page.add_TextRegion(textregion)
|
||||
pcgts.Page.add_TextRegion(textregion)
|
||||
|
||||
for region in drop_caps:
|
||||
textregion = TextRegionType(
|
||||
|
|
@ -152,7 +148,7 @@ class EynollahXmlWriter:
|
|||
orientation=-region.skew
|
||||
)
|
||||
self.serialize_lines_in_region(textregion, offset, counter, [region])
|
||||
page.add_TextRegion(textregion)
|
||||
pcgts.Page.add_TextRegion(textregion)
|
||||
|
||||
for region in marginals_left:
|
||||
textregion = TextRegionType(
|
||||
|
|
@ -162,7 +158,7 @@ class EynollahXmlWriter:
|
|||
orientation=-region.skew
|
||||
)
|
||||
self.serialize_lines_in_region(textregion, offset, counter, region.lines)
|
||||
page.add_TextRegion(textregion)
|
||||
pcgts.Page.add_TextRegion(textregion)
|
||||
|
||||
for region in marginals_right:
|
||||
textregion = TextRegionType(
|
||||
|
|
@ -172,17 +168,17 @@ class EynollahXmlWriter:
|
|||
orientation=-region.skew
|
||||
)
|
||||
self.serialize_lines_in_region(textregion, offset, counter, region.lines)
|
||||
page.add_TextRegion(textregion)
|
||||
pcgts.Page.add_TextRegion(textregion)
|
||||
|
||||
for region in images:
|
||||
image = ImageRegionType(
|
||||
id=counter.next_region_id,
|
||||
Coords=CoordsType(points=self.calculate_points(region.contour, offset, 2),
|
||||
conf=region.conf))
|
||||
page.add_ImageRegion(image)
|
||||
pcgts.Page.add_ImageRegion(image)
|
||||
|
||||
for region in seplines:
|
||||
page.add_SeparatorRegion(
|
||||
pcgts.Page.add_SeparatorRegion(
|
||||
SeparatorRegionType(
|
||||
id=counter.next_region_id,
|
||||
Coords=CoordsType(points=self.calculate_points(region.contour, offset, 2),
|
||||
|
|
@ -193,7 +189,7 @@ class EynollahXmlWriter:
|
|||
id=counter.next_region_id,
|
||||
Coords=CoordsType(points=self.calculate_points(region.contour, offset, 6),
|
||||
conf=region.conf))
|
||||
page.add_TableRegion(table)
|
||||
pcgts.Page.add_TableRegion(table)
|
||||
|
||||
return pcgts
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue