# About This Release

Cognex ViDi 3.4.1 introduces the following new features and enhancements:

- Blue Locate tool

  The Blue Locate tool has undergone significant overhaul, including the following:

  - Create a Layout Model, which provides presence/absense verification of features in areas of an image.
  - New label, marking and model graphics to both increase visibility and usability by making labeled and marked features clearer, and handles to enhance graphic interaction when moving and resizing labels.
  - Feature identifiers can now be up to 140 characters.
  - Improved capabilities for oriented and scaled features.
  - Improved workflow when labeling images/views, with the tool remembering the previously labeled feature, allowing you to start with one image, create a label, and then apply that label to remainder of your images.
  - Improved performance of node models, along with a new Model Editor GUI.
  - The tool can now create a region of interest for downstream tools based on a feature, a match, or a node or layout model.

- Training workflow

  - There is a new paradigm for defining the images/views that will be used to train tools, allowing the process to be more transparent and controllable through integration with the new image sample sets.

- Image sample sets

  - The ability to create and manage images/views as training and testing sample sets has been added, which allows for better management of the images/views used to train and test tools.

- Database Overview filtering

  - While in Expert Mode, it is now possible to filter results and statistics in the Database Overview, using the syntax of the Display filters.

- Blue Read tool

  - Capability to identify and read rotated characters.

- Red Analyze tool

  - An eraser tool has been added which allows you to remove areas of defect regions and masks.
- In addition to the above new features, there have been numerous performance and stability improvements

Note:

- The VisionPro, Designer and ViDi software require that a valid Cognex Security Dongle be installed during all phases of operation. Any attempts to temporarily remove, substitute, or share a Cognex Security Dongle may cause your system to operate incorrectly, and may result in the loss of data.

  When ViDi is configured for the Client/Server functionality, and a computer has been configured as a server, the Cognex Security Dongle must be attached to the server, but the client(s) does not need a Cognex Security Dongle.

- Sample code is included with the ViDi 3.4.1 installer. The resources for the sample code (ViDi 3.4 Sample Code Resource.msi), which include images and workspaces, are available for download from the Cognex Support Site.
- For more information about new API functionality in this release, see the Cognex ViDi Suite .NET Library and Cognex ViDi Suite C API help files.