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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07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 \u003ccode\u003eTextAnnotation\u003c/code\u003e class is 3.7.0, and documentation is provided for versions ranging from 3.7.0 down to 2.3.0.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eTextAnnotation\u003c/code\u003e is a class within the Google Cloud Vision v1 API that represents the structured output of OCR extracted text, organized hierarchically from \u003ccode\u003eTextAnnotation\u003c/code\u003e to \u003ccode\u003ePage\u003c/code\u003e to \u003ccode\u003eBlock\u003c/code\u003e to \u003ccode\u003eParagraph\u003c/code\u003e to \u003ccode\u003eWord\u003c/code\u003e to \u003ccode\u003eSymbol\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThis class implements multiple interfaces, including \u003ccode\u003eIMessage\u003c/code\u003e, \u003ccode\u003eIEquatable\u003c/code\u003e, \u003ccode\u003eIDeepCloneable\u003c/code\u003e, and \u003ccode\u003eIBufferMessage\u003c/code\u003e, and inherits from \u003ccode\u003eobject\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eTextAnnotation\u003c/code\u003e class contains two primary properties: \u003ccode\u003ePages\u003c/code\u003e, a list of detected pages, and \u003ccode\u003eText\u003c/code\u003e, the UTF-8 text extracted from these pages.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eTextAnnotation\u003c/code\u003e class provides two constructors: a default constructor and a copy constructor, allowing instances to be created either blank or as copies of existing instances.\u003c/p\u003e\n"]]],[],null,[]]
