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34 lines
718 B
Python
34 lines
718 B
Python
import os.path
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import subprocess
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import tempfile
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import rasterio
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with rasterio.open('rasterio/tests/data/RGB.byte.tif') as src:
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b = src.read_band(1)
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g = src.read_band(2)
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r = src.read_band(3)
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meta = src.meta
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tmpfilename = os.path.join(tempfile.mkdtemp(), 'decimate.tif')
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meta.update(
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width=src.width/2,
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height=src.height/2)
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with rasterio.open(
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tmpfilename, 'w',
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dtype=rasterio.uint8,
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**meta
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) as dst:
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dst.write_band(1, b)
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dst.write_band(2, g)
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dst.write_band(3, r)
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outfilename = os.path.join(tempfile.mkdtemp(), 'decimate.jpg')
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rasterio.copy(tmpfilename, outfilename, driver='JPEG', quality='30')
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info = subprocess.call(['open', outfilename])
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