public sealed class TextAnnotation : IMessage<TextAnnotation>, IEquatable<TextAnnotation>, IDeepCloneable<TextAnnotation>, IBufferMessage, IMessage
Reference documentation and code samples for the Google Cloud Vision v1 API class TextAnnotation.
TextAnnotation contains a structured representation of OCR extracted text.
The hierarchy of an OCR extracted text structure is like this:
TextAnnotation -> Page -> Block -> Paragraph -> Word -> Symbol
Each structural component, starting from Page, may further have their own
properties. Properties describe detected languages, breaks etc.. Please refer
to the
[TextAnnotation.TextProperty][google.cloud.vision.v1.TextAnnotation.TextProperty]
message definition below for more detail.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThe latest version of the Google Cloud Vision v1 API class TextAnnotation is 3.7.0, with multiple previous versions available for reference, including 3.4.0.\u003c/p\u003e\n"],["\u003cp\u003eTextAnnotation provides a structured representation of text extracted via OCR, organized hierarchically from TextAnnotation to Page, Block, Paragraph, Word, and Symbol.\u003c/p\u003e\n"],["\u003cp\u003eThe TextAnnotation class inherits from \u003ccode\u003eobject\u003c/code\u003e and implements several interfaces, including \u003ccode\u003eIMessage\u003c/code\u003e, \u003ccode\u003eIEquatable\u003c/code\u003e, \u003ccode\u003eIDeepCloneable\u003c/code\u003e, and \u003ccode\u003eIBufferMessage\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eTextAnnotation\u003c/code\u003e class contains two main properties: \u003ccode\u003ePages\u003c/code\u003e, which is a list of detected pages, and \u003ccode\u003eText\u003c/code\u003e, which represents the UTF-8 text detected across the pages.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eTextAnnotation\u003c/code\u003e has two constructors, one empty and the other taking a \u003ccode\u003eTextAnnotation\u003c/code\u003e object as a parameter.\u003c/p\u003e\n"]]],[],null,[]]
