affine_trans_image — 2D `geometry` op

• Data kinds: image → image

• Call: fullseye.apply(img, "affine_trans_image", a=0.5, b=0.5) (the 2-D model is one image plus two scalar knobs a,b∈[0,1])

• HALCON equivalent: affine_trans_image (the HALCON reference is a useful guide to its meaning and parameters)

affine_trans_image: 入力 → 出力

*The figure is the real output on a synthetic 128×128 input. Left: input, right: output (a non-image return value is shown as the value itself).*

Usage

A general affine transform combining rotation (`-20 to +20 degrees, determined by a) and shear (determined by b). Applies ndimage.affine_transform relative to the center, filling outside the frame by reflection. Corresponds to HALCON's affine_trans_image` (Apply an arbitrary affine 2D transformation to images) -- HALCON allows passing an arbitrary 2x3/3x3 transform matrix directly, but this is an approximation limited to a two-parameter rotation+shear.

> The detailed description below is the original text — the summary and the headings are translated.

`a が回転角、b` がせん断量を振る。両方が使われる。平行移動・独立な

拡大縮小はこの op では表現できない。

Detailed usage guide

• gallery2d_geometry family guide

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Try it in Studio

The program below has been verified to run (same input as the figure). In Studio's help this block becomes buttons that load and run it on the spot.

affine_trans_image 0.50 0.50

▸ Load this pipeline · Load & run

Runnable examples (verified samples that actually call this op)

• gallery2d_geometry — py -3.11 examples/gallery2d_geometry.py

Ops the type connects to (they accept `image` as input)

identity · gaussian · mean_box · bilateral · unsharp · median · min_filter · max_filter

Same category (`geometry`)

rotate_img · rescale_img · affine_warp · sk_swirl · mirror_image · transpose_region · rotate_image · zoom_image_factor

*Provenance: ops.py — 2D operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

affine_trans_image — 2D geometry op