typed op• 데이터 종류: qimage → rgbimage
• 호출: fullseye.apply(img, "tb_quaternion_to_rgb", a=0.5, b=0.5)(2-D 는 이미지 1 장 + 스칼라 노브 2 개 a,b∈[0,1] 모델)
사원수 이미지의 벡터 부분을 선형 RGB로 표현. → (H, W, 3).
> 아래 상세 설명은 원문입니다 —— 요약과 제목은 번역되어 있습니다.
The inverse of :func:rgb_to_quaternion — and, by default, a *checked*
inverse. A quaternion image that picked up a scalar component somewhere (a
Hamilton product with a non-pure quaternion, a monogenic signal handed here
by mistake) is refused rather than silently truncated, because dropping
the `w` component is exactly the kind of loss that produces a plausible
picture from the wrong data. Pass `allow_scalar=True` to opt in to the
truncation when it is what you meant.
The tolerance is relative to the field's own peak modulus
(:data:_MONOGENIC_K_TOL, 1e-9): a quaternion image that really is pure
carries `|w|` at the 1e-17 level after a round trip through two FFTs, and
anything with a meaningful scalar part is many orders above that. Nothing
real lives in between.
Raises `ValueError: *qimage* is not a finite (H, W, 4)` array; or
it has a non-negligible scalar part and `allow_scalar` is False.
Typed bridge of the quat op `quaternion_to_rgb into the 2-D evolution registry: the same implementation, called under the op(v, a, b) convention. This op has no tunable parameter; a and b` are unused.
• 샘플 데이터 카탈로그(DL URL / 라이선스) —— 2-D 는 skimage.data(BSD/public)+ 합성, 3-D 는 실데이터 소스(Stanford/PDS 등)의 DL URL.
• 연산자의 내력·참고문헌 —— 이 연산자 족의 바탕이 된 연구/기법의 출처.
• (아직 없음)
rgbimage 를 입력으로 받는 것)identity · tb_wetness · tb_sensor_capture · tb_specular_diffuse_split · tb_specular_coefficient_map · tb_specular_free_transform · tb_rgb_to_quaternion
typed)tb_points_to_voxel · tb_estimate_point_normals · tb_iss_keypoints · tb_angle_3points · tb_project_points · tb_render_point_depth · tb_statistical_outlier_removal · tb_radius_outlier_removal
*Provenance: ops.py — 2D 연산자 레지스트리. 이 op 노트는 tools/opdocs.py md 가 자동 생성합니다(직접 편집하지 마세요).*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.