MultiMatte, a Promptable Image Background Removal Model
Details
- External ID
- 49645803
- Source
- HN
- Company
- —
- Product
- MultiMatte, a Promptable Image Background Removal Model
- Website domain
- usefeyn.com
- Launched
- Sept. 10, 2026
- Cohort
- —
- Upvotes
- 57
- Upvotes percentile
- 0.8692185007974481
- Tags
- —
- Fetched at
- Sept. 14, 2026, 5:28 p.m.
- Updated at
- Sept. 14, 2026, 5:28 p.m.
Description
Hey HN, I'm Shreyash from Feyn. We help companies build custom models from their data.Today we're releasing MultiMatte, a background removal model you can aim with words. Name an object in your image. MultiMatte keeps just that thing, and removes everything else.Try it out on your images: https://usefeyn.com/multimatte/.Demo video: https://youtu.be/XZ5BJWAkOjsMultiMatte is open source. Build with it using our NoBg library https://github.com/feyninc/nobg. Model card here: https://hf.co/feyninc/multimatteMultiMatte is the second iteration of our background removal models. The first was FeyNoBg, which we released here https://news.ycombinator.com/item?id=49072462.The big upgrade is promptability. Most models keep all foreground elements when cutting the background. MultiMatte lets you prompt the exact objects you want to keep and remove everything else. For example, If you have an image with a dog and a bowl, you can ask MultiMatte to keep just the dog.MultiMatte is built on Meta's SAM 3, a concept-promptable detector that already understands phrases. Our biggest change was in masking. Instead of binary masks that classify each pixel as being inside or outside an object, MultiMatte uses alpha mattes that assign an opacity value to each pixel, with respect to an object. This allows us to better represent hair, fur, motion blur, and other kinds of fuzzy boundaries.Across all our measured benchmarks, MultiMatte shows a step improvement over SAM 3. On DIS5K, S-measure rises from 0.674 to 0.908 (a 34.6% relative gain), and on DUT-OMRON from 0.792 to 0.901 (13.7%).Our blog covers more of the training details and results https://usefeyn.com/blog/multimatte.Happy to answer any questions!
Enrichment
- Theme
- image editing and background removal tools
- Vertical
- Horizontal
- Function
- Content generation
- Audience
- Developer
- AI stance
- AI-native
- Project type
- Commercial product
- Normalized one-liner
- image background removal model
- Manually corrected
- False
Could you build this?
No This is a custom computer vision research project involving low-rank fine-tuning (LoRA) of SAM 3 (Segment Anything Model) for promptable alpha matting.
What it would actually take: The system requires a PyTorch-based training pipeline utilizing large-scale image matting and segmentation datasets with paired text annotations, running LoRA fine-tuning across high-end GPU clusters (A100/H100s). The hard part is adapting SAM's binary segmentation outputs into soft, continuous alpha trimaps/mattes without losing fine details like hair or translucency based on open-vocabulary text prompts. This requires specialized deep learning expertise in computer vision, matting loss functions, and model quantization/serving (e.g., TensorRT-LLM/vLLM for vision).
Discussion
8 comments analyzed.
Competitors mentioned: remove.bg (being shut down by Canva), Preview.app background removal tool
Concerns raised: Demo runs on AWS VM, not fully client-side
Feature requests: Video background removal capabilities, Optimized bounding box preprocessing, Outline tracing or contour hints as input, Support for markup image with visual hints as preprocessing
Competitors
Other products that read as similar to this one — 74 launches clear the similarity bar, closest 8 shown.
Attention rank: #5 of 75 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 301 days after the earliest competitor.
- FeyNoBg · hn · 2026-07-27 · 121 upvotes · similarity 0.59
- Remove Backgrounds For Free (AI LOCAL) · ph · 2026-09-26 · 1 upvotes · similarity 0.42
- SeedPix · ph · 2026-09-16 · 2 upvotes · similarity 0.39
- RemoveMate · ph · 2026-09-24 · 1 upvotes · similarity 0.38
- Clearcut · ph · 2026-09-16 · 1 upvotes · similarity 0.38
- An all-in-one image crop/split/collage tool (no uploads, no watermark) · hn · 2026-01-09 · 7 upvotes · similarity 0.38
- 73hi Background Remover · ph · 2026-09-22 · 1 upvotes · similarity 0.38
- Unpixelate · ph · 2026-09-12 · 1 upvotes · similarity 0.38
Other launches for this product
- No other launches for this product.
Same idea, different domain
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