makebox doesn't output horizontal coordinates of textangle 90 content

[rmast]

Environment

tesseract 4.1.1 and 5.0.0-beta-20210916
Linux 5.4.0-81-generic #91-Ubuntu SMP Thu Jul 15 19:09:17 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

using nld language.
the language nld (and eng) from https://github.com/tesseract-ocr/tessdata with these sizes:
15400601 eng.traineddata
8903736 nld.traineddata

Makebox does output this for a part in the image that has vertically oriented text (textangle 90):
(all horizontal coordinates and widths are 0)

2 1968 0 1982 0 0
0 1985 0 1998 0 0
8 2001 0 2014 0 0
4 2016 0 2030 0 0
- 2041 0 2049 0 0
2 2059 0 2073 0 0
/ 2074 0 2082 0 0
2 2083 0 2097 0 0
2 2116 0 2130 0 0
5 2133 0 2146 0 0
1 2150 0 2158 0 0
9 2165 0 2179 0 0
8 2181 0 2195 0 0
0 2197 0 2211 0 0

This is the image that was used for this data:
210913.nog.2-000na.zip

A similar issue was filed earlier #2340, but the issuer https://github.com/dev884 didn't provide any pointer to his fix, he has no code at all in his account.

Expected Behavior:

I would expect the horizontal coordinates to resemble the ones in the word oriented hocr-output of the same region of the picture.
<span class=\'ocr_line\' id=\'line_1_1\' title="bbox 111 1289 133 1532; textangle 90; x_size 28.416666; x_descenders 7.1041665; x_ascenders 7.1041665">\n <span class=\'ocrx_word\' id=\'word_1_1\' title=\'bbox 112 1470 133 1532; x_wconf 88\'>2084</span>\n <span class=\'ocrx_word\' id=\'word_1_2\' title=\'bbox 124 1451 127 1459; x_wconf 88\'>-</span>\n <span class=\'ocrx_word\' id=\'word_1_3\' title=\'bbox 111 1403 133 1441; x_wconf 96\'>2/2</span>\n <span class=\'ocrx_word\' id=\'word_1_4\' title=\'bbox 112 1289 133 1384; x_wconf 96\'>251980</span>\n </span>\n

Suggested Fix:

Not thought of any yet. I don't know if the workaround of the previous issuer could be made watertight.

[wollmers]

Reproduced with:

$ tesseract 210913_nog_-000na.tif 210913_nog_-000na -l nld -c hocr_font_info=1 -c hocr_char_boxes=1  --tessdata-dir /usr/local/share/tessdata txt hocr
Tesseract Open Source OCR Engine v5.0.0-alpha-773-gd33ed with Leptonica

That gives in hocr:

  <div class='ocr_page' id='page_1' title='image "210913_nog_-000na.tif"; bbox 0 0 2480 3500; ppageno 0'>
[...]
     <span class='ocr_line' id='line_1_2' title="bbox 111 1289 133 1532; textangle 90; x_size 28.416666; x_descenders 7.1041665; x_ascenders 7.1041665">
      <span class='ocrx_word' id='word_1_3' title='bbox 112 1470 133 1532; x_wconf 79; x_fsize 28'>
       <span class='ocrx_cinfo' title='x_bboxes 1968 3500 1982 3500; x_conf 99.563431'>2</span>
       <span class='ocrx_cinfo' title='x_bboxes 1985 3500 1998 3500; x_conf 99.56974'>0</span>
       <span class='ocrx_cinfo' title='x_bboxes 2001 3500 2014 3500; x_conf 99.574326'>8</span>
       <span class='ocrx_cinfo' title='x_bboxes 2016 3500 2030 3500; x_conf 97.113152'>4</span>
      </span>
      <span class='ocrx_word' id='word_1_4' title='bbox 124 1451 127 1459; x_wconf 85; x_fsize 28'>
       <span class='ocrx_cinfo' title='x_bboxes 2041 3500 2049 3500; x_conf 99.021004'>-</span>
      </span>
      <span class='ocrx_word' id='word_1_5' title='bbox 111 1403 133 1441; x_wconf 96; x_fsize 28'>
       <span class='ocrx_cinfo' title='x_bboxes 2059 3500 2073 3500; x_conf 99.569565'>2</span>
       <span class='ocrx_cinfo' title='x_bboxes 2074 3500 2082 3500; x_conf 99.55378'>/</span>
       <span class='ocrx_cinfo' title='x_bboxes 2083 3500 2097 3500; x_conf 99.532211'>2</span>
      </span>
      <span class='ocrx_word' id='word_1_6' title='bbox 112 1289 133 1384; x_wconf 96; x_fsize 28'>
       <span class='ocrx_cinfo' title='x_bboxes 2116 3500 2130 3500; x_conf 99.557686'>2</span>
       <span class='ocrx_cinfo' title='x_bboxes 2133 3500 2146 3500; x_conf 99.572243'>5</span>
       <span class='ocrx_cinfo' title='x_bboxes 2150 3500 2158 3500; x_conf 99.570076'>1</span>
       <span class='ocrx_cinfo' title='x_bboxes 2165 3500 2179 3500; x_conf 99.573807'>9</span>
       <span class='ocrx_cinfo' title='x_bboxes 2181 3500 2195 3500; x_conf 99.573814'>8</span>
       <span class='ocrx_cinfo' title='x_bboxes 2197 3500 2211 3500; x_conf 99.562088'>0</span>
      </span>
     </span>

The coordinates of the bounding boxes on character level are wrong in the output. I would expect bounding boxes in the coordinate system of the page image like the bounding boxes at word level. That means, they inherit the textangle of enclosing line.

[rmast]

I introduced a pull request for the solution:
#3599

   <div class='ocr_carea' id='block_1_2' title="bbox 111 1289 133 1532">
    <p class='ocr_par' id='par_1_2' lang='nld' title="bbox 111 1289 133 1532">
     <span class='ocr_line' id='line_1_2' title="bbox 111 1289 133 1532; textangle 90; x_size 28.416666; x_descenders 7.1041665; x_ascenders 7.1041665">
      <span class='ocrx_word' id='word_1_3' title='bbox 112 1470 133 1532; x_wconf 95; x_fsize 7'>
       <span class='ocrx_cinfo' title='x_bboxes 112 1518 133 1532; x_conf 99.56881'>2</span>
       <span class='ocrx_cinfo' title='x_bboxes 112 1502 132 1515; x_conf 99.563797'>0</span>
       <span class='ocrx_cinfo' title='x_bboxes 112 1486 132 1499; x_conf 99.56678'>8</span>
       <span class='ocrx_cinfo' title='x_bboxes 112 1470 132 1484; x_conf 99.568611'>4</span>
      </span>
      <span class='ocrx_word' id='word_1_4' title='bbox 124 1451 127 1459; x_wconf 88; x_fsize 7'>
       <span class='ocrx_cinfo' title='x_bboxes 124 1451 127 1459; x_conf 99.513245'>-</span>
      </span>
      <span class='ocrx_word' id='word_1_5' title='bbox 111 1403 133 1441; x_wconf 88; x_fsize 7'>
       <span class='ocrx_cinfo' title='x_bboxes 112 1427 133 1441; x_conf 98.927139'>2</span>
       <span class='ocrx_cinfo' title='x_bboxes 111 1418 132 1426; x_conf 99.018196'>/</span>
       <span class='ocrx_cinfo' title='x_bboxes 112 1403 133 1417; x_conf 99.005127'>2</span>
      </span>
      <span class='ocrx_word' id='word_1_6' title='bbox 112 1289 133 1384; x_wconf 96; x_fsize 7'>
       <span class='ocrx_cinfo' title='x_bboxes 112 1370 133 1384; x_conf 99.544136'>2</span>
       <span class='ocrx_cinfo' title='x_bboxes 112 1354 133 1367; x_conf 99.573975'>5</span>
       <span class='ocrx_cinfo' title='x_bboxes 112 1342 133 1350; x_conf 99.509567'>1</span>
       <span class='ocrx_cinfo' title='x_bboxes 112 1321 133 1335; x_conf 99.54306'>9</span>
       <span class='ocrx_cinfo' title='x_bboxes 112 1305 133 1319; x_conf 99.544922'>8</span>
       <span class='ocrx_cinfo' title='x_bboxes 112 1289 133 1303; x_conf 99.564034'>0</span>
      </span>
     </span>
    </p>
   </div>