In this quickstart, we'll use LandingLens — a Native App available in the Snowflake Marketplace — to create a computer vision model that detects pneumonia in X-ray images. After completing this quickstart, users can use the concepts and procedures from this quickstart to build Object Detection, Segmentation, and Classifications models in LandingLens.

What Is LandLens?

LandingLens is a cloud-based Visual AI platform. LandingLens empowers users to create and train Visual AI models even if you don't have a background in AI, machine learning, or computer vision. LandingLens guides you through the process of uploading images, labeling them, training models, comparing model performance, and deploying models.

To users who are familiar with machine learning, LandingLens offers advanced tools to customize the model training process. LandingLens supports advanced deployment options including cloud deployment as well as Docker and LandingEdge, LandingAI's edge-deployment solution.

What You'll Learn

What You'll Need

What You'll Build

Request the LandingLens App

Access to the LandingLens app is available by request. To request the app, follow the instructions below:

  1. Open the LandingAI provider page in the Snowflake Marketplace.
  2. Locate and click the LandingLens - Visual AI Platform listing.
  3. Click Request.Request LandingLens
  4. Fill out and submit the request form.
  5. The LandingAI team will review the request and contact you with more information.

Install the LandingLens App

After you've requested the app and been granted access it, follow the instructions below to install it in Snowflake:

  1. Open the LandingAI provider page in the Snowflake Marketplace.
  2. Locate and click the LandingLens - Visual AI Platform listing.
  3. Click Get.Get LandingLens
  4. Select the Warehouse to use for the installation process. The warehouse is only used to install the app, and can be any size (including X-Small).
  5. If you want to change the name of the application, click Options and enter a name in Application Name.
  6. Click Get.Get LandingLens
  7. Go to Snowsight > Data Products > Apps. Double-click the LandingLens app listing. (Although the app is listed in the Installed Apps section, it is not installed yet.) Installed Apps
  8. A new page opens. It has a series of steps that guide you through the installation process.
  9. In Step 1, click Grant. These permissions allow LandingLens to create compute pools and perform other tasks in your account. Grant account privileges
  10. In Step 2, click Review. Review the allowed endpoints on the pop-up and click Connect. This allows LandingLens to access the World Wide Web (WWW).
  11. Scroll to the top of the page and click Activate. Activate
  12. LandingLens opens in your Apps. Click Launch App. Launch the app installer
  13. The installer opens in the APP_WIZARD tab.
  14. Click Install/Upgrade/Resume. The installer installs all the required services for the LandingLens app. This process takes about 20 to 30 minutes. Do NOT close the tab during the installation process, because it will stop the process. Launch the app installer
  15. Once the installation process is complete, all services have the status DONE or READY (green checkmark) and the URL to access LandingLens displays. Copy and paste the URL.
    Copy the URL for the LandingLens app
  16. Paste the URL into a new tab to open the LandingLens app. We recommend bookmarking this URL. you can log in to the app using the Snowflake credentials you used to install the app. Only users with the correct privileges in the account can access the LandingLens app. LAI Lens app

Now that you've installed the LandingLens app, you are ready to get the sample images. LandingAI provides a set of sample images as an "app" that can be downloaded from the Snowflake Marketplace. You will use these images to train a computer vision model in LandingLens that detects pneumonia.

To get the sample images, follow these instructions:

  1. Open the Sample Dataset for LandingLens: LifeSciences Pneumonia listing in the Snowflake Marketplace and click Get. Sample dataset listing in the Snowflake Marketplace
  2. Go to Snowsight > Data Products > Apps. Click the Sample Dataset for LandingLens: LifeSciences Pneumonia app listing. Open the app
  3. Click the Shield icon in the top right corner of this app page.
  4. Click Review and allow the CREATE DATABASE privilege, which grants the app to create a database to load the sample data. Grant privileges
  5. Open the LLENS_DATA_APP tab.
  6. Click Create Sample Dataset to load the dataset into your Snowflake account. Create the database
  7. Make a note of the location of the images; you will use these later.
    • Database: llens_sample_ds_lifesciences
    • Schema: pneumonia
    • Stage: dataset

Now that you've loaded the sample dataset into your Snowflake account, you're ready to create a computer vision model using those images in LandingLens.

Load the Images into LandingLens

  1. Open LandingLens in Snowflake (use the URL generated when you installed the app).
  2. Click Start First Project and name your project.
  3. Click Classification.
  4. Click Sync Snowflake Data. Sync images from Snowflake
  5. Enter the location that you saved the sample dataset to earlier. The location should be:
    • Database: llens_sample_ds_lifesciences
    • Schema: pneumonia
    • Stage: dataset
  6. You will get a message saying that you don't have access to that location. To fix this, copy the SQL commands at the bottom of the pop-up and run them in a Snowflake worksheet in a different browser tab.
  7. Turn on Classify images based on folder names.
  8. Click the directory path (⌄ /) in the Specify the path to an existing folder field.
  9. Select the data directory.
  10. Click Sync. Select the snowflake stage to load images from
  11. All images in the stage are loaded to the LandingLens project. (Refresh the page to see the images.) The project now has 100 images; 50 images have the class "normal", and 50 have the class "pneumonia". Select the snowflake stage to load images from

Train a Classification Model

Now that all of the images are in the LandingLens project and have classes assigned to them, train a computer vision model. When you train a model, you give the labeled images to a deep learning algorithm. This allows the algorithm to "learn" what to look for in images.

To train a model, click Train.

Train the model

The right side panel opens and shows the model training progress. This process can take a few minutes.

Model training progress

Once training finishes, you will see the model's predictions and performance information. You can click the model tile in the side panel to see more detailed information. In most real-world use cases, you might need to upload and label more images to improve performance. In this example, the model should be performing well, so we will go to the next step, which is deploying the model.

Model performance

Deploy the Model to an Endpoint

After you are happy with the results of your trained model, you are ready to use it. To use a model, you deploy it, which means you put the model in a virtual location so that you can then upload images to it. When you upload images, the model runs inference, which means that it detects what it was trained to look for.

In this example, we're going to show how to use Cloud Deployment. You can also deploy models using LandingEdge and Docker.

To deploy the model with Cloud Deployment, follow these instructions:

  1. Open the Models tab.
  2. Click Deploy in the model's row.Deploy the model
  3. Name the endpoint and click Deploy.Name the endpoint
  4. LandingLens deploys the model to the endpoint and opens the Deploy page. You can now use this endpoint to run inference. View the deployment

Run Inference

After deploying a model with Cloud Deployment, a custom Python script displays at the bottom of the Deploy page. Copy this script, replace the placeholers with your information, and use the LandingLens Python library to integrate the model with your applications with very few lines of code.

Copy the Python script

Congratulations on creating a pneumonia detection computer vision model in LandingLens! You can now apply the concepts you've learned to building custom computer vision models in LandingLens.

In this quickstart you learned:

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