How to Use Motion Mosaics

Follow these steps to create your own unique image composites.

Step 1: Setup

The first step is to provide the source images. You have two options on the Setup page:

Capture from Camera

Use your device's camera to capture a new sequence of photos.

  • Short vs. Long Mode: Choose "Short" for intervals in seconds (great for capturing quick movements) or "Long" for intervals in minutes (ideal for time-lapses).
  • Time Interval: Set how often a photo is taken.
  • Number of Images: Decide how many photos you want in your sequence.
  • Initial Delay: Set a countdown before the capture begins.

Upload Photos

Use your own set of images. Click or drag-and-drop your files to upload them. Once uploaded, click "Proceed to Analysis" to start editing.

Step 2: Edit Your Mosaic

Individual Image Adjustments

The top panel allows you to fine-tune each source image. Use the arrow buttons to cycle through your images. For each one, you can:

  • Adjust Colors (R, G, B): These sliders range from -1 to 1. At -1, the color is completely removed; at 0, there's no change; at 1, the color's intensity is doubled.
  • Adjust Transparency: Control how see-through the image is. It defaults to 25% opacity.
  • Save or Delete: You can save your individually edited image or remove it from the composite entirely.

The Composite Image

The main image preview shows your final composite, which updates automatically as you make adjustments. Below it, you can select a Composition Mode to change how the images are blended together. When you're happy with the result, click the "Save Composite Image" button.

Composition Modes

Average

This mode averages the color values for each pixel across all the images. It creates a soft, blurry effect that can smooth out motion and create a dreamy, painterly quality, similar to what you might get with a long-exposure photograph.

Lighten Only

This mode compares all the images pixel by pixel and keeps only the brightest pixel at each location. It's particularly effective for capturing light trails from cars, stars, or other moving light sources against a dark background.

Darken Only

The opposite of Lighten, this mode keeps only the darkest pixel at each location. This is useful for removing moving objects (like people or cars) from a static scene, effectively "cleaning" the background over time.

Additive

This mode adds the color values of all images together. The result is a much brighter, often ethereal-looking image. It can be used for creative effects but can easily become overexposed if not used carefully.

About My21STEM

My21STEM makes educational games, apps, and resources designed to inspire the next generation of innovators, creators, and problem-solvers. We believe in learning through hands on explorations and activities to build and communicate ideas and have fun.

Visit us at My21STEM.com to learn more about our projects and mission.