[ https://issues.apache.org/jira/browse/SPARK-23205?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-23205: ------------------------------------ Assignee: Apache Spark > ImageSchema.readImages incorrectly sets alpha channel to 255 for four-channel > images > ------------------------------------------------------------------------------------ > > Key: SPARK-23205 > URL: https://issues.apache.org/jira/browse/SPARK-23205 > Project: Spark > Issue Type: Bug > Components: ML, MLlib > Affects Versions: 2.3.0 > Reporter: Siddharth Murching > Assignee: Apache Spark > Priority: Critical > > When parsing raw image data in ImageSchema.decode(), we use a [java.awt.Color > constructor|https://docs.oracle.com/javase/7/docs/api/java/awt/Color.html#Color(int)] > that sets alpha = 255, even for four-channel images. > See the offending line here: > https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/ml/image/ImageSchema.scala#L172 > A fix is to simply update the line to: > val color = new Color(img.getRGB(w, h), nChannels == 4) > instead of > val color = new Color(img.getRGB(w, h)) -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org