Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/19439#discussion_r145007975 --- Diff: python/pyspark/ml/image.py --- @@ -0,0 +1,129 @@ +# +# Licensed to the Apache Software Foundation (ASF) under one or more +# contributor license agreements. See the NOTICE file distributed with +# this work for additional information regarding copyright ownership. +# The ASF licenses this file to You under the Apache License, Version 2.0 +# (the "License"); you may not use this file except in compliance with +# the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +import pyspark +from pyspark import SparkContext +from pyspark.sql.types import * +from pyspark.sql.types import Row, _create_row +from pyspark.sql import DataFrame +from pyspark.ml.param.shared import * +import numpy as np + +undefinedImageType = "Undefined" + +ImageFields = ["origin", "height", "width", "nChannels", "mode", "data"] + +ocvTypes = { + undefinedImageType: -1, + "CV_8U": 0, "CV_8UC1": 0, "CV_8UC2": 8, "CV_8UC3": 16, "CV_8UC4": 24, + "CV_8S": 1, "CV_8SC1": 1, "CV_8SC2": 9, "CV_8SC3": 17, "CV_8SC4": 25, + "CV_16U": 2, "CV_16UC1": 2, "CV_16UC2": 10, "CV_16UC3": 18, "CV_16UC4": 26, + "CV_16S": 3, "CV_16SC1": 3, "CV_16SC2": 11, "CV_16SC3": 19, "CV_16SC4": 27, + "CV_32S": 4, "CV_32SC1": 4, "CV_32SC2": 12, "CV_32SC3": 20, "CV_32SC4": 28, + "CV_32F": 5, "CV_32FC1": 5, "CV_32FC2": 13, "CV_32FC3": 21, "CV_32FC4": 29, + "CV_64F": 6, "CV_64FC1": 6, "CV_64FC2": 14, "CV_64FC3": 22, "CV_64FC4": 30 +} + +ImageSchema = StructType([ --- End diff -- I mean, I see a separate `object` for `ImageSchema` whereas `ImageSchema` here is an `StructType`, and I think I am not seeing `ImageFields` in Scala side.
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