A Activity diagram used in UML 6/9 and SysML B Bachman diagram Booch used in software engineering Block diagram Block Definition Diagram BDD used in SysML C Carroll diagram Cartogram Catalytic cycle Chemical equation Curly arrow diagram Category theory diagrams Cause-and-effect diagram Chord diagram Circuit diagram Class diagram from UML 1/9 Collaboration diagram from UML 2.0 Communication diagram from UML 2.0 Commutative diagram Comparison diagram Component diagram from UML 3/9 Composite structure diagram from UML 2.0 Concept map Constellation diagram Context diagram Control flow diagram Contour diagram Cordier diagram Cross functional flowchart D Data model diagram Data flow diagram Data structure diagram Dendrogram Dependency diagram Deployment diagram from UML 9/9 Dot and cross diagram Double bubble map used in education Drakon-chart E Entity-Relationship diagram ERD Event-driven process chain Euler diagram Eye diagram a diagram of a received telecommunications signal Express-G Extended Functional Flow Block Diagram EFFBD F Family tree Feynman diagram Flow chart Flow process chart Flow diagram Fusion diagram Free body diagram G Gantt chart shows the timing of tasks or activities used in project management Grotrian diagram Goodman diagram shows the fatigue data example: for a wind turbine blades H Hasse diagram HIPO diagram I Internal Block Diagram IBD used in SysML IDEF0 IDEF1 entity relations Interaction overview diagram from UML Ishikawa diagram J Jackson diagram K Karnaugh map Kinematic diagram L Ladder diagram Line of balance Link grammar diagram M Martin ERD Message Sequence Chart Mind map used for learning, brainstorming, memory, visual thinking and problem solving Minkowski spacetime diagram Molecular orbital diagram N N2 Nassi Shneiderman diagram or structogram a representation for structured programming Nomogram Network diagram O Object diagram from UML 2/9 Organigram Onion diagram also known as "stacked Venn diagram" P Package diagram from UML 4/9 and SysML Parametric diagram from SysML PERT Petri net shows the structure of a distributed system as a directed bipartite graph with annotations Phylogenetic tree - represents a phylogeny evolutionary relationships among groups of organisms Piping and instrumentation diagram P&ID Phase diagram used to present solid/liquid/gas information Plant Diagram Pressure volume diagram used to analyse engines Pourbaix diagram Process flow diagram or PFD used in chemical engineering Program structure diagram R Radar chart Radial Diagram Requirement Diagram Used in SysML Rich Picture R-diagram Routing diagram S Sankey diagram represents material, energy or cost flows with quantity proportional arrows in a process network. Sentence diagram represents the grammatical structure of a natural language sentence. Sequence diagram from UML 8/9 and SysML SDL/GR diagram Specification and Description Language. SDL is a formal language used in computer science. Smith chart Spider chart Spray diagram SSADM Structured Systems Analysis and Design Methodology used in software engineering Star chart/Celestial sphere State diagram are used for state machines in software engineering from UML 7/9 Swim lane Syntax diagram used in software engineering to represent a context-free grammar Systems Biology Graphical Notation a graphical notation used in diagrams of biochemical and cellular processes studied in Systems biology System context diagram System structure Systematic layout planning T Timing Diagram: Digital Timing Diagram Timing Diagram: UML 2.0 TQM Diagram Treemap U UML diagram Unified Modeling Language used in software engineering Use case diagram from UML 5/9 and SysML V Value Stream Mapping Venn diagram Voronoi diagram W Warnier-Orr Williot diagram Y Yourdon-Coad see Edward Yourdon, used in software engineering
Image to text converter is the Online OCR tool based on Optical character recognition technology. Use our service to extract text and characters from scanned PDF documents (including multipage files), photos and digital camera captured images.
免费在线图片文字识别，支持简体、繁体、英文、韩语、日语、俄语等多国语言的准确识别，识别结果可复制或下载txt或word，点击按钮选择图片、将图片拖入此虚线框、从剪切板粘贴截图，最多可选择50张，支持 JPG PNG BMP GIF SVG 格式。
光学字符识别（OCR）将文本图像（扫描件、智能手机照片、PDF）转换为机器可读的字符串，并越来越多地转换为 结构化数据。 现代 OCR 是一个清理图像、查找文本、读取文本并导出丰富元数据的管道， 以便下游系统可以搜索、索引或提取字段。
免费在线文字识别工具 图像识别成文本. 使用 OCR 所需的所有工具都触手可及。 将扫描的文档和图像转换为可编辑的 Word, Pdf, Excel, PowerPoint, ePub 和 Txt（文本）输出格式。
Convert scanned documents and images into editable text with our free online OCR service. No need to register or download software, simply upload your files and get started.
The OCR.space Online OCR service converts images and PDF documents into editable text files using Optical Character Recognition (OCR). The service also supports creating searchable PDF documents.
免费在线将图片和PDF转换为文本 OCR Free是一款强大的在线OCR工具，利用先进技术从图片、PDF及扫描文档中提取文字。 只需上传文件，OCR Free自动处理。 支持100多种文件类型和多种语言，轻松快速将任何文档转换成可编辑文本。
i2OCR is a free online OCR tool that extracts text from images and PDFs using AI powered optical character recognition. Supports 128 languages. Convert image and PDF files to editable, searchable text online.
OCR （Optical Character Recognition，光学字符识别）是指电子设备（例如扫描仪或数码相机）检查纸上打印的字符，通过检测暗、亮的模式确定其形状，然后用字符识别方法将形状翻译成计算机文字的过程；即，针对印刷体字符，采用光学的方式将纸质文档中的文字 ...
基于人工智能 该工具在后台使用基于人工智能的 Tesseract OCR（光学字符识别）引擎从图像中提取文本。 为了获得最佳效果，我们采用了先进的图像预处理技术和数据模型。
draw.io is free online diagram software for making flowcharts, process diagrams, org charts, UML, ER and network diagrams
Open and edit diagrams online with Draw.io, a free diagram software supporting various formats and diagram types.
Create a new diagram, or open an existing diagram in your new tab. To create a new diagram, enter a Diagram Name and click the location where you want to save the file.
Create flowcharts and diagrams online with this easy to use software.
Create and edit diagrams with draw.io, a free diagramming tool that integrates seamlessly with Office 365.
Easily import diagrams from Lucidchart to diagrams.net or draw.io with this simple tool.
Access and integrate Google Drive files with Draw.io using the Google Picker tool for seamless diagram creation.
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