Pre-labeling Feature (Available after Model Validation)

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Description

After you validate a model, you can import new image data to the current module and use the pre-labeling feature to perform auto-labeling based on this model. You can fine-tune the results after labeling is completed.

Prerequisites

The pre-labeling feature is available only when the current module contains validated models.

Suitable Applications

  • Supported modules: Instance Segmentation, Object Detection, Classification, Defect Segmentation, and Text Detection.

  • The pre-labeling feature can be performed only on the following three types of data:

    • Unlabeled data

    • Automatically labeled data (images with a yellow triangle at the front of the image number)

    • Manually fine-tuned data after automatic labeling (images with a yellow triangle at the front of the image number)

If you need to pre-label images that are already manually labeled, you must clear these labels before use.
The pre-labeling feature can outstandingly reduce the cost of manual labeling. However, the accuracy of the results depends on the model that you use. We recommend that you train a high precision model before you use the pre-labeling feature.

Performance Results

A yellow triangle will be displayed at the front of the sequence number of each pre-labeled image. If you fine-tune the results of pre-labeling, these images are still considered as pre-labeled, and the yellow triangles do not disappear.

  • If you clear all labels of an image, the yellow triangle before it will be cleared.

  • In the Classification module, if you modify the class labels of an image, the yellow triangle before it will be cleared.

Instructions

You can use one of the following three methods to perform the pre-labeling operation.

  • Method 1: use the Pre-labeling Tool in the labeling toolbar to automatically label a single image.

  • Method 2: click the Pre-label button in the upper part of the image list to automatically label images in batches.

  • Method 3: right-click an image in the image list and select Pre-label in the menu to automatically label the selected images.

If an image is already labeled, a new label will replace the original label after each pre-labeling is performed.

Method 1: Pre-labeling Tool

  1. In the labeling toolbar, right-click tools introduction samrt labeling icon, then click tools pre labeling tool icon (or press T on the keyboard) to select the Pre-labeling Tool.

    In the Classification and Text Detection modules, you can click tools pre labeling tool icon in the labeling toolbar (or press T on the keyboard) to select the Pre-labeling Tool.
  2. Click Start labeling on the upper part of the displayed image to enable automatic labeling for this image.

Method 2: Pre-label Button

In the upper part of the image list, click the Pre-label button to enable automatic labeling for all images.

Method 3: Pre-label Option

In the image list, select one or more images, then select the Pre-label option in the right-click menu to enable automatic labeling for selected images.

pre label option

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