🛡️ Robustness Benchmarks

Test image 1920×1080. 53 attack tests, 52 passed, pass rate 98.1%.

#	Attack	Param	Preview	Result
1	Original	1920×1080		✅
2	Rotate 3°	1920×1080		✅
3	Rotate 15°	1920×1080		✅
4	Rotate 75°	1920×1080		✅
5	Rotate 175°	1920×1080		✅
6	Rotate 275°	1920×1080		✅
7	Downscale 20%	384×216		❌
8	Downscale 35%	672×378		✅
9	Downscale 50%	960×540		✅
10	Downscale 75%	1440×810		✅
11	Upscale 125%	2400×1350		✅
12	Upscale 150%	2880×1620		✅
13	Upscale 200%	3840×2160		✅
14	Upscale 300%	5760×3240		✅
15	Upscale 500%	9600×5400		✅
16	Affine Shear 0.3	2496×1080		✅
17	Affine Shear 0.6	3072×1080		✅
18	Affine Shear 1.2	4224×1080		✅
19	Affine Shear 1.8	5376×1080		✅
20	Affine 0.5×2.0	960×2160		✅
21	Non-uniform 1.5×0.5	2880×540		✅
22	Non-uniform 0.5×1.5	960×1620		✅
23	Non-uniform 0.6×1.8	1152×1944		✅
24	Non-uniform 0.7×1.4	1344×1512		✅
25	Non-uniform 0.8×1.2	1536×1296		✅
26	Non-uniform 1.2×0.8	2304×864		✅
27	Perspective 5%	1920×1080		✅
28	Perspective 7%	1920×1080		✅
29	Perspective 9%	1920×1080		✅
30	Perspective 11%	1920×1080		✅
31	Perspective 13%	1920×1080		✅
32	Gaussian Blur 3×3	1920×1080		✅
33	Gaussian Blur 7×7	1920×1080		✅
34	Gaussian Blur 9×9	1920×1080		✅
35	Gaussian Blur 10×10	1920×1080		✅
36	Gaussian Blur 11×11	1920×1080		✅
37	JPEG Q=50	1920×1080		✅
38	JPEG Q=40	1920×1080		✅
39	JPEG Q=30	1920×1080		✅
40	Crop 80%	1536×864		✅
41	Crop 60%	1152×648		✅
42	Mirror H	1920×1080		✅
43	Mirror V	1920×1080		✅
44	Mirror H+V	1920×1080		✅
45	Combo Rotate+Crop	1536×864		✅
46	Combo Rotate+NonUni	1344×1512		✅
47	Combo Rotate+JPEG50	1920×1080		✅
48	Combo Crop+JPEG50	1536×864		✅
49	Combo Shear+JPEG50	2496×1080		✅
50	Combo Persp+JPEG50	1920×1080		✅
51	Combo Persp+Blur	1920×1080		✅
52	Combo Blur+JPEG50	1920×1080		✅
53	Combo Mirror+JPEG50	1920×1080		✅

Conclusion：wmgg blind watermark passes 52/53 attack tests. Only extreme downscale to 20% (384×216) fails due to information loss. All other attacks — rotation, JPEG, scaling, blur, perspective, crop, mirror, affine, and combinations — pass reliably. Recommend keeping image width ≥ 640px for worry-free extraction.

Test date: 2026-05-31 | Source: 1920×1080 | Raw data: tools/robust_data/attack_20260531_160220.log