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slow image load visualization for tfw with rotation parameters #13520
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Author Name: Giovanni Manghi (@gioman)
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Author Name: Paolo Cavallini (@pcav)
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Author Name: Paolo Cavallini (@pcav)
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Author Name: **Novarese ** (Novarese ) Moreover, if the second row of the worldfile is negative, then Qgis gets frozen: check the attachment out. The issue occurs upon loading "lossy" compressed rasters like JPEG and PNG, while all's right with lossless formats as TIF/BMP/GIF.
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Author Name: Jürgen Fischer (@jef-n)
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Author Name: Jürgen Fischer (@jef-n)
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Author Name: Nyall Dawson (@nyalldawson) More info in #13852 |
Author Name: Giovanni Manghi (@gioman)
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Author Name: Luca Lanteri (Luca Lanteri) Checked on QGIS 3.0 & QGIS 2.18.16 and all works fine.
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Author Name: Giovanni Manghi (@gioman)
This is the [[GeoTIFF]] info: Driver: GTiff/GeoTIFF Files: 0021_00211001_rgb.tif Size is 7680, 13824 Coordinate System is: PROJCS["WGS 84 / UTM zone 32N", GEOGCS["WGS 84", DATUM["WGS_1984", SPHEROID["WGS 84",6378137,298.257223563, AUTHORITY[[EPSG""7030]], AUTHORITY[[EPSG""6326]], PRIMEM[[Greenwich]], UNIT[[degree]], AUTHORITY[[EPSG""4326]], PROJECTION[[Transverse_Mercator]], PARAMETER[[latitude_of_origin]], PARAMETER[[central_meridian]], PARAMETER[[scale_factor]], PARAMETER[[false_easting]], PARAMETER[[false_northing]], UNIT["metre",1, AUTHORITY[[EPSG""9001]], AUTHORITY[[EPSG""32632]] [[GeoTransform]] = 32339334.7755, 0.249, 0.018 5003594.055500001, 0.018, -0.249 Metadata: EXIF_BitsPerSample=16 16 16 EXIF_Compression=1 EXIF_PhotometricInterpretation=2 EXIF_Orientation=1 EXIF_SamplesPerPixel=3 EXIF_XResolution=(833.333) EXIF_YResolution=(833.333) EXIF_PlanarConfiguration=1 EXIF_ResolutionUnit=3 EXIF_Software=Adobe Photoshop CS2 Windows EXIF_DateTime=2008:10:16 08:59:35 EXIF_ColorSpace=65535 EXIF_PixelXDimension=7680 EXIF_PixelYDimension=13824 AREA_OR_POINT=Area Image Structure Metadata: COMPRESSION=DEFLATE INTERLEAVE=PIXEL Corner Coordinates: Upper Left (32339334.776, 5003594.056) (129d24'8.65"W,Invalid angle) Lower Left (32339583.608, 5000151.880) ( 78d11'7.42"W,Invalid angle) Upper Right (32341247.096, 5003732.296) ( 68d14'50.72"W,Invalid angle) Lower Right (32341495.928, 5000290.120) ( 6d30'39.61"W,Invalid angle) Center (32340415.352, 5001942.088) (120d44'35.31"E,Invalid angle) Band 1 Block=256x256 Type=Byte, [[ColorInterp]]=Red Overviews: 3840x6912, 1920x3456, 960x1728, 480x864 Band 2 Block=256x256 Type=Byte, [[ColorInterp]]=Green Overviews: 3840x6912, 1920x3456, 960x1728, 480x864 Band 3 Block=256x256 Type=Byte, [[ColorInterp]]=Blue Overviews: 3840x6912, 1920x3456, 960x1728, 480x864 to When I try to load or visualize raster ortophoto with rotation parameter in the header file (tfw) qgis is freezing for 40-50 sec. I have to wait the same time for every pan/refresh operation. This is the [[GeoTIFF]] info: Driver: GTiff/GeoTIFF Files: 0021_00211001_rgb.tif Size is 7680, 13824 Coordinate System is: PROJCS["WGS 84 / UTM zone 32N", GEOGCS["WGS 84", DATUM["WGS_1984", SPHEROID["WGS 84",6378137,298.257223563, AUTHORITY[[EPSG""7030]], AUTHORITY[[EPSG""6326]], PRIMEM[[Greenwich]], UNIT[[degree]], AUTHORITY[[EPSG""4326]], PROJECTION[[Transverse_Mercator]], PARAMETER[[latitude_of_origin]], PARAMETER[[central_meridian]], PARAMETER[[scale_factor]], PARAMETER[[false_easting]], PARAMETER[[false_northing]], UNIT["metre",1, AUTHORITY[[EPSG""9001]], AUTHORITY[[EPSG""32632]] [[GeoTransform]] = 32339334.7755, 0.249, 0.018 5003594.055500001, 0.018, -0.249 Metadata: EXIF_BitsPerSample=16 16 16 EXIF_Compression=1 EXIF_PhotometricInterpretation=2 EXIF_Orientation=1 EXIF_SamplesPerPixel=3 EXIF_XResolution=(833.333) EXIF_YResolution=(833.333) EXIF_PlanarConfiguration=1 EXIF_ResolutionUnit=3 EXIF_Software=Adobe Photoshop CS2 Windows EXIF_DateTime=2008:10:16 08:59:35 EXIF_ColorSpace=65535 EXIF_PixelXDimension=7680 EXIF_PixelYDimension=13824 AREA_OR_POINT=Area Image Structure Metadata: COMPRESSION=DEFLATE INTERLEAVE=PIXEL Corner Coordinates: Upper Left (32339334.776, 5003594.056) (129d24'8.65"W,Invalid angle) Lower Left (32339583.608, 5000151.880) ( 78d11'7.42"W,Invalid angle) Upper Right (32341247.096, 5003732.296) ( 68d14'50.72"W,Invalid angle) Lower Right (32341495.928, 5000290.120) ( 6d30'39.61"W,Invalid angle) Center (32340415.352, 5001942.088) (120d44'35.31"E,Invalid angle) Band 1 Block=256x256 Type=Byte, [[ColorInterp]]=Red Overviews: 3840x6912, 1920x3456, 960x1728, 480x864 Band 2 Block=256x256 Type=Byte, [[ColorInterp]]=Green Overviews: 3840x6912, 1920x3456, 960x1728, 480x864 Band 3 Block=256x256 Type=Byte, [[ColorInterp]]=Blue Overviews: 3840x6912, 1920x3456, 960x1728, 480x864
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(fixes qgis#13520) On behalf of Faunalia, sponsored by ENEL
Author Name: Luca Lanteri (Luca Lanteri)
Original Redmine Issue: 3460
Affected QGIS version: master
Redmine category:projection_support
When I try to load or visualize raster ortophoto with rotation parameter in the header file (tfw) qgis is freezing for 40-50 sec. I have to wait the same time for every pan/refresh operation.
If the rotation parameters is set to zero the image is loaded just in few second.
The same raster (with rotation parameters) works fine with others GIS application, as udig for example.
The italian list suggest me to open a ticket.
I attach a jpg version of the image to limit the size
This is the [[GeoTIFF]] info:
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