- Overview
- UI Automation
- UI-ANA-016 - Pull Open Browser URL
- UI-ANA-017 - ContinueOnError True
- UI-ANA-018 - List OCR/Image Activities
- UI-DBP-006 - Container Usage
- UI-DBP-013 - Excel Automation Misuse
- UI-DBP-030 - Forbidden Variables Usage In Selectors
- ST-DBP-021 - Hardcoded Timeout
- UI-PRR-001 - Simulate Click
- UI-PRR-002 - Simulate Type
- UI-PRR-003 - Open Application Misuse
- UI-PRR-004 - Hardcoded Delays
- UI-REL-001 - Large Idx in Selectors
- UI-SEC-004 - Selector Email Data
- UI-SEC-010 - App/Url Restrictions
- UI-USG-011 - Non Allowed Attributes
- SY-USG-013 - Private File Invoke
- SY-USG-014 - Incorrect Execution Template Placeholders
- Applications and technologies automated with UI Automation
- UiPath Browser Migration Tool
- Computer Vision Recorder
- Click
- Hover
- Type Secure Text
- Send Hotkey
- Type Into
- Check
- Select Item
- Select Multiple Items
- Get Text
- Set Text
- Activate
- Highlight
- Set Focus
- Anchor Base
- Context Aware Anchor
- Find Relative Element
- Indicate On Screen
- Element Exists
- Find Element
- Wait Element Vanish
- Find Children
- Get Ancestor
- Element Scope
- Get Attribute
- Set Clipping Region
- Get Position
- Take Screenshot
- Wait Attribute
- On Element Appear
- On Element Vanish
- Click Text
- Hover Text
- Find Text Position
- Get Full Text
- Get Visible Text
- Extract Structured Data
- Text Exists
- Click OCR Text
- Hover OCR Text
- Get OCR Text
- Find OCR Text Position
- Microsoft OCR
- Microsoft Project Oxford Online OCR
- Microsoft Azure Computer Vision OCR
- Tesseract OCR
- Google Cloud Vision OCR
- OCR Text Exists
- Click Image
- Hover Image
- Find Image Matches
- Image Exists
- Find Image
- Wait Image Vanish
- On Image Appear
- On Image Vanish
- Load Image
- Save Image
- Attach Browser
- Close Tab
- Go Back
- Go Forward
- Go Home
- Inject JS Script
- Navigate To
- Open Browser
- Refresh Browser
- Set Web Attribute
- Attach Window
- Close Window
- Get Active Window
- Hide Window
- Maximize Window
- Minimize Window
- Move Window
- Restore Window
- Show Window
- Export UI Tree
- Invoke ActiveX Method
- Inject .NET Code
- Click Trigger
- Key Press Trigger
- Click Image Trigger
- System Trigger
- Hotkey Trigger
- Mouse Trigger
- Get Event Info
- Monitor Events
- Get Source Element
- Replay User Event
- Block User Input
- Use Foreground
- Element Attribute Change Trigger
- Element State Change Trigger
- Callout
- Copy Selected Text
- Get From Clipboard
- Set To Clipboard
- Close Application
- Open Application
- Start Process
- Get Password
- Tooltip
- Click Picture on Screen
- Click Toolbar Button
- Read Statusbar
- Select Dates in Calendar
- Select Menu Item
- Expand Tree
- Call Transaction
- SAP Logon
- SAP Login
- Table Cell Scope
- SAP Session Attributes Change Trigger
- Expand ALV Tree
- Expand ALV Hierarchical Table
- Use Application/Browser
- Check App State
- Check/Uncheck
- Click
- Extract Table Data
- Get Text
- Get URL
- Go to URL
- Highlight
- Hover
- Keyboard Shortcuts
- Navigate Browser
- Select Item
- Take Screenshot
- Type Into
- Get Attribute
- Get Browser Data
- Set Browser Data
- Mouse Scroll
- Inject Js Script
- Drag and Drop
- For Each UI Element
- Application Event Trigger
- Click Event Trigger
- Keypress Event Trigger
- Set Text
- Check Element
- Fill Form
- Perform browser search and retrieve results using UI Automation APIs
- Web Browsing
- Find Images
- Click Images
- Trigger and Monitor Events
- Create and Override Files
- HTML Pages: Extract and Manipulate Information
- Window Manipulation
- Automated List Selection
- Find and Manipulate Window Elements
- Manage Text Automation
- Load and Process Images
- Manage Mouse Activated Actions
- Automate Application Runtime
- Automated Run of a Local Application
- Browser Navigation
- Web Automation
- Trigger Scope Example
- Computer Vision Local Server
- Mobile Automation
- Release notes
- Project compatibility
- Get Log Types
- Get Logs
- Get Page Source
- Get Device Orientation
- Get Session Identifier
- Install App
- Manage Current App
- Manage Other App
- Open DeepLink
- Open URL
- Mobile Device Connection
- Positional Swipe
- Press Hardware Button
- Set Device Orientation
- Take Screenshot
- Take Screenshot Part
- Element Exists
- Execute Command
- Get Attribute
- Get Selected Item
- Get Text
- Set Selected Item
- Set Text
- Swipe
- Tap
- Type Text
- Draw Pattern
- Terminal
Load and Process Images
The example below explains how to read and retrieve a text from a previously loaded image. It presents activities such as Load Image or Try Catch. You can find these activities in the UiPath.UIAutomation.Activities package.
This is how the automation process can be built:
- Open Studio and create a new Process.
-
Drag a Sequence container in the Workflow Designer.
-
Create the following variable:
Variable Name
Variable Type
Default Value
image
UiPath.Core.Image
 resultedText
String
 Note: The Load Image activity can only process an image that was previously added into the project folder. Make sure to add the image before running the workflow or to download this example and use the image already added to the process.
-
-
Drag a Load Image activity inside the Sequence container.
- In the Properties panel, add the path of the image you want to use. For this example is
"images\Hello World.png"
. - Add the variable
images
in the Image field.
- In the Properties panel, add the path of the image you want to use. For this example is
- Place a Try Catch activity below the Load Image activity.
- Drag a Sequence container inside the Try container of the Try Catch activity.
-
Place an OCR engine inside the container. This example is using Tesseract OCR.
- In the Properties panel, add the variable
image
in the Image field. - Add the language code,
"eng"
, in the Language field. - Select the None option from the Profile drop-down list.
- Add the value
2
in the Scale field. - Add the variable
resultedText
in the Text field. -
This is how the Try container should look:
- In the Properties panel, add the variable
-
Drag a Message Box activity below the Tesseract OCR engine.
- In the Properties panel, select the Ok button from the Buttons drop-down list.
- Add the expression
"Resulted text"
in the Caption field. - Add the expression
"The text identified in the image is """ + resultedText + """"
in the Text field. - Select the check box for the TopMost option. This brings the message box to the foreground.
-
Drag a Message Box container inside the Catches container of the Try Catch activity.
- In the Properties panel, select the Ok option from the Buttons drop-down list.
- Add the expression
"Image OCR Error"
in the Caption field. - Add the expression
"No text could be identified in the selected image"
in the Text field. - Select the check box for the TopMost option. This brings the message box to the foreground.
-
This is how the Catches container should look:
- Run the process. The image is loaded in the workflow, processed, the text is detected and extracted.