Video detection

Track blobs in video

Add a video and get a result with detection boxes over bright, dark, or moving blobs, plus optional labels and connecting lines.

Video

Blob tracker boxes

Live

Video

Detect

Sensitivity

Min size

Max blobs

Box color

Labels

Connect lines

Show video

Open in Fuser

Runs in your browser. Your files are never uploaded.

How tools work

A tool is a small app you describe in plain words. Try this one here, then keep it on your Fuser canvas and connect it to the rest of your work.

A tool on the Fuser canvas with its controls and result

1. Try it here

Add your own file or text and adjust the controls. Live tools run in your browser, so nothing is uploaded.

Two tools chained together on the Fuser canvas

2. Open it in Fuser

Sign up free and the tool opens on your canvas with this example wired in, ready to connect to images, video or text from other nodes.

A Tool node with a description of the tool to build

3. Describe your own

Need something different? Describe the tool you want and Fuser builds it, with the controls you asked for.

Ways to use blob detection

Adjust detection and overlay controls to shape the annotated video for different visual analysis and design tasks.

Highlight bright regions

Choose Bright detection to place boxes around lighter blobs in the video.

Find dark regions

Switch to Dark detection to identify darker blobs and mark them with visible boxes.

Visualize moving areas

Use Motion detection to create box overlays around moving blobs in the video.

Tune detection sensitivity

Adjust Sensitivity to change how readily the tool detects blobs in the video.

Filter blob sizes

Set minimum and maximum blob limits to control which detected areas appear and how many boxes are shown.

Build a tracking-style overlay

Choose a box color, then turn Labels, Connect lines, and Show video on or off to shape the result.

Frequently asked questions

It takes one video and returns a video with detection squares over bright, dark, or moving blobs. You can also show labels, connect detected blobs with lines, and choose whether the original video remains visible.

Provide one video to the tool. The result updates in your browser as you change the detection mode and other controls.

Detect chooses bright, dark, or motion detection. Sensitivity, Min size, and Max blobs adjust detection behavior, while Box color, Labels, Connect lines, and Show video change the overlay appearance.

No account is needed to try the tool on this page, and it runs free in your browser. Downloading more than once or opening it in Fuser asks you to sign up.

Open the tool in Fuser and use its video result with other nodes in a larger workflow. You can adjust the controls here first, then combine the blob-overlay video with other video-processing steps.