From 0662ece536e090989ad4e2281317336129eae468 Mon Sep 17 00:00:00 2001
From: Robert Sachunsky <sachunsky@informatik.uni-leipzig.de>
Date: Thu, 4 Sep 2025 15:18:55 +0200
Subject: [PATCH] do_work_of_slopes*: use shm also in non-light mode(s)

---
 src/eynollah/eynollah.py             | 33 ++++++++++++++++------------
 src/eynollah/utils/separate_lines.py |  6 +++--
 2 files changed, 23 insertions(+), 16 deletions(-)

diff --git a/src/eynollah/eynollah.py b/src/eynollah/eynollah.py
index 42af8e4..6333ca5 100644
--- a/src/eynollah/eynollah.py
+++ b/src/eynollah/eynollah.py
@@ -1554,11 +1554,14 @@ class Eynollah:
         if not len(contours):
             return [], [], [], [], [], [], []
         self.logger.debug("enter get_slopes_and_deskew_new_light")
-        results = self.executor.map(partial(do_work_of_slopes_new_light,
-                                            textline_mask_tot_ea=textline_mask_tot,
-                                            slope_deskew=slope_deskew,textline_light=self.textline_light,
-                                            logger=self.logger,),
-                                    boxes, contours, contours_par, range(len(contours_par)))
+        with share_ndarray(textline_mask_tot) as textline_mask_tot_shared:
+            results = self.executor.map(partial(do_work_of_slopes_new_light,
+                                                textline_mask_tot_ea=textline_mask_tot_shared,
+                                                slope_deskew=slope_deskew,
+                                                textline_light=self.textline_light,
+                                                logger=self.logger,),
+                                        boxes, contours, contours_par, range(len(contours_par)))
+            results = list(results) # exhaust prior to release
         #textline_polygons, boxes, text_regions, text_regions_par, box_coord, index_text_con, slopes = zip(*results)
         self.logger.debug("exit get_slopes_and_deskew_new_light")
         return tuple(zip(*results))
@@ -1567,14 +1570,16 @@ class Eynollah:
         if not len(contours):
             return [], [], [], [], [], [], []
         self.logger.debug("enter get_slopes_and_deskew_new")
-        results = self.executor.map(partial(do_work_of_slopes_new,
-                                            textline_mask_tot_ea=textline_mask_tot,
-                                            slope_deskew=slope_deskew,
-                                            MAX_SLOPE=MAX_SLOPE,
-                                            KERNEL=KERNEL,
-                                            logger=self.logger,
-                                            plotter=self.plotter,),
-                                    boxes, contours, contours_par, range(len(contours_par)))
+        with share_ndarray(textline_mask_tot) as textline_mask_tot_shared:
+            results = self.executor.map(partial(do_work_of_slopes_new,
+                                                textline_mask_tot_ea=textline_mask_tot_shared,
+                                                slope_deskew=slope_deskew,
+                                                MAX_SLOPE=MAX_SLOPE,
+                                                KERNEL=KERNEL,
+                                                logger=self.logger,
+                                                plotter=self.plotter,),
+                                        boxes, contours, contours_par, range(len(contours_par)))
+            results = list(results) # exhaust prior to release
         #textline_polygons, boxes, text_regions, text_regions_par, box_coord, index_text_con, slopes = zip(*results)
         self.logger.debug("exit get_slopes_and_deskew_new")
         return tuple(zip(*results))
@@ -1596,8 +1601,8 @@ class Eynollah:
                                             logger=self.logger,
                                             plotter=self.plotter,),
                                     boxes, contours, contours_par, range(len(contours_par)))
-                #textline_polygons, boxes, text_regions, text_regions_par, box_coord, index_text_con, slopes = zip(*results)
                 results = list(results) # exhaust prior to release
+        #textline_polygons, boxes, text_regions, text_regions_par, box_coord, index_text_con, slopes = zip(*results)
         self.logger.debug("exit get_slopes_and_deskew_new_curved")
         return tuple(zip(*results))
 
diff --git a/src/eynollah/utils/separate_lines.py b/src/eynollah/utils/separate_lines.py
index e4bb953..1a2f511 100644
--- a/src/eynollah/utils/separate_lines.py
+++ b/src/eynollah/utils/separate_lines.py
@@ -1539,9 +1539,10 @@ def get_smallest_skew(img, sigma_des, angles, logger=None, plotter=None, map=map
         var = 0
     return angle, var
 
+@wrap_ndarray_shared(kw='textline_mask_tot_ea')
 def do_work_of_slopes_new(
         box_text, contour, contour_par, index_r_con,
-        textline_mask_tot_ea, slope_deskew,
+        textline_mask_tot_ea=None, slope_deskew=0.0,
         logger=None, MAX_SLOPE=999, KERNEL=None, plotter=None
 ):
     if KERNEL is None:
@@ -1689,9 +1690,10 @@ def do_work_of_slopes_new_curved(
 
     return textlines_cnt_per_region[::-1], box_text, contour, contour_par, crop_coor, index_r_con, slope
 
+@wrap_ndarray_shared(kw='textline_mask_tot_ea')
 def do_work_of_slopes_new_light(
         box_text, contour, contour_par, index_r_con,
-        textline_mask_tot_ea, slope_deskew, textline_light,
+        textline_mask_tot_ea=None, slope_deskew=0, textline_light=True,
         logger=None
 ):
     if logger is None: