QuickBGCutQuickBGCut

Synthetic input test · reviewed 2026-10-07

Background Removal Lab

Four AI-generated test images were processed with the current browser model. We documented 20 separate edge observations, including visible failures, so you can judge where the tool helps and where manual cleanup is still required.

Source files

4

Inspection points

20

Model

ISNet FP16

Measured batch

61.6 s

How the run was measured

The four files were added to one batch and processed in order on MacBook Pro (Apple M3 Pro, 18 GB) using Codex in-app browser (Chromium 154). The first timing includes the model cold start; later timings are warm runs from the same tab.

One sequential local run using the application library. Timings include each removeBackground call; the first includes model initialization and local asset loading. Public-network download time and inspection/export work are not included. Background-tab scheduling can affect elapsed time.

Alpha 0 is counted as fully transparent. Alpha values from 1 to 254 are counted as soft-edge pixels. Soft alpha can be useful antialiasing or unwanted background, so every numerical result is paired with a visual inspection.

Download the evidence

The machine-readable exports include the environment, source-level measurements, timings, and all 20 observation notes.

SOURCE 01 · Product cutout

Synthetic amber glass bottle

Needs edge cleanup
Source image
Synthetic amber glass bottle source
PNG result
Synthetic amber glass bottle transparent result
Dimensions
1254 x 1254 px
Difficulty
high
Source file
1.84 MB
Output file
0.60 MB
Fully transparent
84.0%
Soft-edge pixels
3.4%
Measured run
7.9 s
Timing state
cold

Why this file is difficult

Glass reflections, pale edge highlights, and the table contact area make this generated product scene difficult.

Five observations for Synthetic amber glass bottle

Ribbed stopper stays recognizable inspection crop

OBSERVATION 01

Ribbed stopper stays recognizable

Transparency and reflections

Focus: Glass stopper and its bright top rim

The vertical ribs and amber highlights remain. A pale outline follows the top rim, so this edge needs retouching on a dark destination.

Manual cleanup recommended · moderate finding
Left silhouette keeps a pale fringe inspection crop

OBSERVATION 02

Left silhouette keeps a pale fringe

Product silhouette

Focus: Left shoulder and vertical bottle boundary

The outer shape is continuous, but a thin white and green fringe from the generated scene remains along the shoulder and left edge.

Manual cleanup recommended · moderate finding
Window reflections remain inside the glass inspection crop

OBSERVATION 03

Window reflections remain inside the glass

Transparency and reflections

Focus: Amber body above the paper label

The window-shaped reflections are preserved inside the bottle. Background removal does not turn this into optically clear glass that will match every new scene.

Usable at the stated scale · minor finding
Blank label stays intact inspection crop

OBSERVATION 04

Blank label stays intact

Fine strokes and text

Focus: Cream label corners and lower border

The four label corners and its paper texture survive without obvious holes. This checks a blank label only; it is not evidence about small printed text.

Usable at the stated scale · minor finding
Base retains a warm rim inspection crop

OBSERVATION 05

Base retains a warm rim

Low contrast and shadows

Focus: Lower glass edge and contact with the table

Most of the tabletop and cast shadow disappear, while a narrow amber-yellow rim remains beneath the base. Refine it before placing the bottle on a dark background.

Manual cleanup recommended · moderate finding

SOURCE 02 · Handwriting overlay

Synthetic Sample Name handwriting

Needs edge cleanup
Source image
Synthetic Sample Name handwriting source
PNG result
Synthetic Sample Name handwriting transparent result
Dimensions
1536 x 1024 px
Difficulty
moderate
Source file
2.40 MB
Output file
0.20 MB
Fully transparent
97.5%
Soft-edge pixels
2.2%
Measured run
8.1 s
Timing state
warm

Why this file is difficult

Thin blue cursive strokes overlap textured, shaded paper. This is fictional demonstration writing, not a real signature.

Five observations for Synthetic Sample Name handwriting

Opening S remains connected inspection crop

OBSERVATION 01

Opening S remains connected

Fine strokes and text

Focus: Large loop at the start of Sample

The full opening loop survives, but a pale paper-colored outline surrounds the blue ink. It is especially visible against black.

Manual cleanup recommended · moderate finding
Crossing strokes remain readable inspection crop

OBSERVATION 02

Crossing strokes remain readable

Fine strokes and text

Focus: Joined strokes and ascenders in Sample

The central word retains its cursive structure and the long descending stroke. Small enclosed spaces remain open instead of becoming a solid patch.

Usable at the stated scale · minor finding
Name keeps its shape and a light halo inspection crop

OBSERVATION 03

Name keeps its shape and a light halo

Low contrast and shadows

Focus: Thin letters in the second fictional word

Name is readable, but light pixels cling to the thin blue strokes. Preview at the intended size and clean the pale rim for a dark document or graphic.

Manual cleanup recommended · moderate finding
Tall N strokes stay continuous inspection crop

OBSERVATION 04

Tall N strokes stay continuous

Fine strokes and text

Focus: Long diagonal and upper loop of N

The two tall strokes retain their length and connection to the following letters. The sample is demonstration handwriting, not an authentic personal signature.

Usable at the stated scale · minor finding
Underline survives with a pale tip inspection crop

OBSERVATION 05

Underline survives with a pale tip

Fine strokes and text

Focus: Long underline, central loop, and right terminal

The underline and its loop remain separate from the background. A bright patch at the right tip and pale edges need cleanup for a dark overlay.

Manual cleanup recommended · moderate finding

SOURCE 03 · Portrait cutout

Fictional beach portrait

Needs edge cleanup
Source image
Fictional beach portrait source
PNG result
Fictional beach portrait transparent result
Dimensions
1254 x 1254 px
Difficulty
high
Source file
2.08 MB
Output file
1.50 MB
Fully transparent
54.8%
Soft-edge pixels
10.5%
Measured run
24.4 s
Timing state
warm

Why this file is difficult

Fine dark flyaways cross blue sky and water; the white shirt and skin boundaries meet a bright beach background.

Five observations for Fictional beach portrait

Sky remains above the crown inspection crop

OBSERVATION 01

Sky remains above the crown

Portrait and hair

Focus: Flyaway strands at the top of the head

A broad pale-blue region remains around the upper hair boundary. This is retained background, not merely a few soft antialiasing pixels.

Manual cleanup recommended · major finding
Left curls retain turquoise fragments inspection crop

OBSERVATION 02

Left curls retain turquoise fragments

Portrait and hair

Focus: Loose curls beside the left cheek and shoulder

The main curls survive, but blue and turquoise pieces of sky and water remain between strands. Manual masking is needed for a clean dark-background portrait.

Manual cleanup recommended · major finding
Detached background patch remains at the right inspection crop

OBSERVATION 03

Detached background patch remains at the right

Low contrast and shadows

Focus: Upper-right flyaways against the sky

A large pale irregular patch remains beyond the hair, with several holes and thin connecting strands. The output should not be accepted as a finished profile image.

Manual cleanup recommended · major finding
Arm shape survives with sandy remnants inspection crop

OBSERVATION 04

Arm shape survives with sandy remnants

Portrait and hair

Focus: Left arm and the gap between arm and shirt

The arm remains recognizable, but a jagged light fringe and small sand-colored fragments survive along the outside and in the arm-to-shirt gap.

Manual cleanup recommended · moderate finding
White sleeve keeps a bright outline inspection crop

OBSERVATION 05

White sleeve keeps a bright outline

Low contrast and shadows

Focus: Right sleeve and fabric boundary

The shirt is preserved, including its folds, but the sleeve edge carries a pale outline. Inspect on a dark destination and remove the leftover rim.

Manual cleanup recommended · moderate finding

Additional worked tasks

The four synthetic inputs and their October 7 measurements above are unchanged. The October 20 workflows are separate: two credited CC0 photographs, a document-placement example and a post-processing recipe. They are not extra observations in this benchmark.

What this small test can support

The bottle label and broad blue graphic strokes survive better than loose hair and small lettering in this synthetic set. All four results retain visible edge defects. This small test does not establish accuracy on real photographs or guarantee publication-ready output.

Asset and correction policy

All four inputs were generated for QuickBGCut with OpenAI image generation on October 7, 2026, without reference images. They are synthetic scenes, not camera photographs. The person is fictional, the handwriting says Sample Name, and the DEMO graphic is a test symbol. The downloadable results are unretouched outputs from the QuickBGCut model. Prompts and file hashes are published in the source record.

View source prompts and file hashes

If a measurement, attribution, or visible conclusion appears wrong, contact support@quickbgcut.com.

Run the same files