error of qgis 3.41 Raster>Conversion>Polygonize(raster to vector)

[qgib]

Author Name: kevin huang (kevin huang)
Original Redmine Issue: 20514
Affected QGIS version: 3.4.1
Redmine category:processing/gdal

---

I want copy some drawing in a old map to qgis
To do this
1: I turn aaa.jpg(old map) into bbb.png (export georeferenced raster) through freehand raster georeferencer plugin
2: Add raster ayer bbb.png then "Raster>Conversion>Polygonize(raster to vector)" ---default run
3: Execution failed

error:

GDAL command output:
Traceback (most recent call last):
File "D:/PROGRA3/QGIS31.4/apps/qgis/./python/plugins\processing\algs\gdal\GdalAlgorithm.py", line 133, in processAlgorithm
GdalUtils.runGdal(commands, feedback)
File "D:/PROGRA3/QGIS31.4/apps/qgis/./python/plugins\processing\algs\gdal\GdalUtils.py", line 110, in runGdal
for line in proc.stdout:
File "D:\PROGRA3\QGIS31.4\apps\Python37\lib\codecs.py", line 322, in decode
(result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xd5 in position 487: invalid continuation byte

Execution failed after 0.53 seconds

---

• 图片20181116145224.jpg (kevin huang)
• 图片20181116145508.jpg (kevin huang)
• 图片20181116181539.jpg (kevin huang)
• 图片20181116182950.jpg (kevin huang)

[qgib]

Author Name: kevin huang (kevin huang)

---

• 13789 was configured as 图片20181116145224.jpg
• 13790 was configured as 图片20181116145508.jpg

---

• 图片20181116145224.jpg (kevin huang) - Information of bbb.png
• 图片20181116145508.jpg (kevin huang) - log of polygonize

[qgib]

Author Name: Giovanni Manghi (@gioman)

---

Does the path (or file name) of the input contain any special char?

---

• status_id was changed from Open to Feedback

[qgib]

Author Name: kevin huang (kevin huang)

---

Giovanni Manghi wrote:

Does the path (or file name) of the input contain any special char?

Thank your attention
no special char:---C:\Users\zjhm\Desktop\bbb.png

[qgib]

Author Name: Giovanni Manghi (@gioman)

---

Does it work ok in 2.18?

[qgib]

Author Name: kevin huang (kevin huang)

---

Giovanni Manghi wrote:

Does it work ok in 2.18?

I just do same action in 2.18

qgis 2.18 become "not responding" as 图片20181116181539.jpg

---

• 13791 was configured as 图片20181116181539.jpg

---

• 图片20181116181539.jpg (kevin huang) - qgis 2.18 become "not responding"

[qgib]

Author Name: kevin huang (kevin huang)

---

Giovanni Manghi wrote:

Does it work ok in 2.18?

now it finished work ok in 2.18

---

• 13792 was configured as 图片20181116182950.jpg

---

• 图片20181116182950.jpg (kevin huang)

[qgib]

Author Name: Giovanni Manghi (@gioman)

---

• crashes_corrupts_data was changed from 0 to 1
• status_id was changed from Feedback to Open
• priority_id was changed from Normal to High
• regression was changed from 0 to 1

[qgib]

Author Name: Alexander Bruy (@alexbruy)

---

Please test with 3.4/master

---

• status_id was changed from Open to Feedback

[qgib]

Author Name: Alexander Bruy (@alexbruy)

---

• status_id was changed from Feedback to Closed
• resolution was changed from to no timely feedback