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1. Exception: Version mismatch: this is the 'cffi' package version 1.13.1,
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2. TypeError: mat data type = 0 is not supported
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3. openni.launch is neither a launch file in package [openni_launch] nor is [openni_launch] a launch file name
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4. min and max of NumPy arrays in Python within a certain range
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5. How to classify people's clothes by Gabor filter?
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