Firebase Docs Reference FirebaseVisionImageMetadata.Rotation public static abstract @interface FirebaseVisionImageMetadata.Rotation implements Annotation Indicates the image rotation. Supported values include: ROTATION_0 which corresponds to back camera with ROTATION_0 ROTATION_90 which corresponds to back camera with ROTATION_90 ROTATION_180 which corresponds to back camera with ROTATION_180 ROTATION_270 which corresponds to back camera with ROTATION_270 Inherited Method Summary From interface java.lang.annotation.Annotation abstract Class<? extends Annotation> annotationType() abstract boolean equals(Object arg0) abstract int hashCode() abstract String toString() Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated May 8, 2018.