[MapProxy] Output colors always reduced with PNG24 source
Martin Kokeš
shr3k at typo3-hosting.com
Sun Mar 31 05:06:30 PDT 2013
Hello list,
I have following config (MP 1.5, PIL from Oliver's source):
---
services:
demo:
kml:
tms:
wmts:
wms:
srs: ["EPSG:900913"]
image_formats: ["image/png"]
layers:
- name: test1
title: Test with PNG24 source
sources: [test1_cache]
- name: test2
title: Test with JPEG source
sources: [test2_cache]
caches:
test1_cache:
sources: [test1_wms]
grids: [global_mercator_osm]
format: png24
cache:
type: file
test2_cache:
sources: [test2_wms]
grids: [global_mercator_osm]
format: png24
cache:
type: file
sources:
test1_wms:
type: wms
req:
url: http://geoportal.cuzk.cz/WMS_ZM10_PUB/service.svc/get
layers: GR_ZM10
format: image/png
transparent: false
coverage:
bbox: [11.214011580382529, 47.964914601259672, 19.407662623095131, 51.691664934538636]
srs: 'EPSG:4326'
supported_srs: ['EPSG:5514']
min_scale: 2.5253813613805272
max_scale: 7576144.0841415804
http:
client_timeout: 300
test2_wms:
type: wms
req:
url: http://geoportal.cuzk.cz/WMS_ZM10_PUB/service.svc/get
layers: GR_ZM10
format: image/jpeg
transparent: false
coverage:
bbox: [11.214011580382529, 47.964914601259672, 19.407662623095131, 51.691664934538636]
srs: 'EPSG:4326'
supported_srs: ['EPSG:5514']
min_scale: 2.5253813613805272
max_scale: 7576144.0841415804
http:
client_timeout: 300
grids:
global_mercator_osm:
base: GLOBAL_MERCATOR
num_levels: 20
globals:
srs:
proj_data_dir: "proj_data"
image:
paletted: false
formats:
png24:
format: image/png
mode: RGB
colors: 0
transparent: false
resampling_method: bicubic
---
This is source request for test1:
http://geoportal.cuzk.cz/WMS_ZM10_PUB/service.svc/get?styles=&format=image%2Fpng&height=1184&bbox=-742076.617816,-1045120.38486,-741052.456103,-1044098.3743&transparent=False&layers=GR_ZM10&service=WMS&width=1186&request=GetMap&srs=EPSG%3A5514&version=1.1.1
Sometimes I become this error:
[2013-03-31 13:59:19,391] mapproxy.wsgiapp - CRITICAL - fatal error in tms for /tms/1.0.0/test1_EPSG900913/16/70795/86663.png
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/mapproxy/wsgiapp.py", line 166, in __call__
resp = self.handlers[handler_name].handle(req)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/service/base.py", line 30, in handle
return handler(parsed_req)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/service/tile.py", line 74, in map
tile = layer.render(tile_request, use_profiles=tile_request.use_profiles, coverage=limit_to)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/service/tile.py", line 265, in render
tile = self.tile_manager.load_tile_coord(tile_coord, with_metadata=True)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 105, in load_tile_coord
created_tiles = creator.create_tiles([tile])
File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 227, in create_tiles
created_tiles = self._create_meta_tiles(meta_tiles)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 300, in _create_meta_tiles
created_tiles.extend(self._create_meta_tile(meta_tile))
File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 309, in _create_meta_tile
meta_tile_image = self._query_sources(query)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 274, in _query_sources
return self.sources[0].get_map(query)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/source/wms.py", line 62, in get_map
resp = self._get_map(query)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/source/wms.py", line 81, in _get_map
return self._get_transformed(query, format)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/source/wms.py", line 124, in _get_transformed
query.size, dst_bbox, self.image_opts)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/image/transform.py", line 91, in transform
result = self._transform(src_img, src_bbox, dst_size, dst_bbox, image_opts)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/image/transform.py", line 156, in _transform
image_filter[image_opts.resampling])
File "/usr/local/lib/python2.7/dist-packages/PIL/Image.py", line 1629, in transform
im.__transformer(box, self, QUAD, quad, resample, fill)
File "/usr/local/lib/python2.7/dist-packages/PIL/Image.py", line 1674, in __transformer
image.load()
File "/usr/local/lib/python2.7/dist-packages/PIL/ImageFile.py", line 212, in load
s = read(self.decodermaxblock)
File "/usr/local/lib/python2.7/dist-packages/PIL/PngImagePlugin.py", line 401, in load_read
cid, pos, len = self.png.read()
File "/usr/local/lib/python2.7/dist-packages/PIL/PngImagePlugin.py", line 93, in read
len, cid = self.fp.get("!I4s")
File "/usr/local/lib/python2.7/dist-packages/PIL/ImageSupport2.py", line 105, in get
return self.read(struct.calcsize(fmt)).unpack(fmt)
File "/usr/local/lib/python2.7/dist-packages/PIL/ImageSupport2.py", line 76, in unpack
raise ValueError(v)
ValueError: unpack requires a string argument of length 8
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/mapproxy/wsgiapp.py", line 166, in __call__
resp = self.handlers[handler_name].handle(req)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/service/base.py", line 30, in handle
return handler(parsed_req)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/service/tile.py", line 74, in map
tile = layer.render(tile_request, use_profiles=tile_request.use_profiles, coverage=limit_to)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/service/tile.py", line 265, in render
tile = self.tile_manager.load_tile_coord(tile_coord, with_metadata=True)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 105, in load_tile_coord
created_tiles = creator.create_tiles([tile])
File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 227, in create_tiles
created_tiles = self._create_meta_tiles(meta_tiles)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 300, in _create_meta_tiles
created_tiles.extend(self._create_meta_tile(meta_tile))
File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 309, in _create_meta_tile
meta_tile_image = self._query_sources(query)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 274, in _query_sources
return self.sources[0].get_map(query)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/source/wms.py", line 62, in get_map
resp = self._get_map(query)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/source/wms.py", line 81, in _get_map
return self._get_transformed(query, format)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/source/wms.py", line 124, in _get_transformed
query.size, dst_bbox, self.image_opts)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/image/transform.py", line 91, in transform
result = self._transform(src_img, src_bbox, dst_size, dst_bbox, image_opts)
File "/usr/local/lib/python2.7/dist-packages/mapproxy/image/transform.py", line 156, in _transform
image_filter[image_opts.resampling])
File "/usr/local/lib/python2.7/dist-packages/PIL/Image.py", line 1629, in transform
im.__transformer(box, self, QUAD, quad, resample, fill)
File "/usr/local/lib/python2.7/dist-packages/PIL/Image.py", line 1674, in __transformer
image.load()
File "/usr/local/lib/python2.7/dist-packages/PIL/ImageFile.py", line 212, in load
s = read(self.decodermaxblock)
File "/usr/local/lib/python2.7/dist-packages/PIL/PngImagePlugin.py", line 401, in load_read
cid, pos, len = self.png.read()
File "/usr/local/lib/python2.7/dist-packages/PIL/PngImagePlugin.py", line 93, in read
len, cid = self.fp.get("!I4s")
File "/usr/local/lib/python2.7/dist-packages/PIL/ImageSupport2.py", line 105, in get
return self.read(struct.calcsize(fmt)).unpack(fmt)
File "/usr/local/lib/python2.7/dist-packages/PIL/ImageSupport2.py", line 76, in unpack
raise ValueError(v)
ValueError: unpack requires a string argument of length 8
...but second request gets through.
This is source request for test2:
http://geoportal.cuzk.cz/WMS_ZM10_PUB/service.svc/get?styles=&format=image%2Fjpeg&height=1184&bbox=-742076.617816,-1045120.38486,-741052.456103,-1044098.3743&transparent=False&layers=GR_ZM10&service=WMS&width=1186&request=GetMap&srs=EPSG%3A5514&version=1.1.1
Results are 256 color PNG in test1 (transformed looks not very well), and 16M color PNG in test2 (looks nice).
Is there other way to force MapProxy to work always in 24 bit with PNG24 source?
Martin
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