Domain: Humanities and Social Sciences — Arts
Target concept: Scaling a vector logo from very small to very large without pixelation

Video generation prompt: On a table, the screen displays the same logo side by side; the image continuously scales from an extremely small size to full screen, with the vector graphic on the left and the bitmap on the right.

Evaluation guide:
(i) Target concept: Resolution independence of vector representation vs. fixed-grid limitation of bitmap representation.
Minimum mechanism: The visual system must be able to resolve discrete pixels on the bitmap at enlarged scale; the vector renderer must preserve path-based geometry without rasterization artifacts; scaling must be applied identically to both representations in the same coordinate space.
(ii)Storyline: Frame 0: Table visible; screen lit; two identical tiny logos centered side-by-side. → Scaling begins: both grow synchronously. → Mid-sequence: Left logo retains crisp edges and proportional fidelity; right logo shows first visible blocks and edge stair-stepping. → Late sequence: Left logo fills screen with perfect clarity; right logo exhibits dominant pixel squares, merged strokes, and collapsed internal details. → Final frame: Both logos occupy full screen width (left half / right half), with fidelity divergence maximized and unambiguous. Perspective: Fixed frontal camera, no parallax, full screen-table-logo hierarchy continuously visible.

Manual:
Experimental Procedure
1. Place a neutral table in frame.
2. Display a digital screen centered on the table.
3. On the screen, render two identical logos side-by-side: vector graphic on left half, bitmap graphic on right half.
4. Simultaneously scale both logos continuously from extremely small (near point-size) to full-screen size.
Observation of Experimental Phenomena
Left logo remains geometrically perfect and sharp at all sizes; right logo develops progressive, unambiguous pixelation — blocky edges, stair-stepped curves, collapsing fine details — intensifying with scale.
Summary of Experimental Principles
Vector graphics use mathematical paths for resolution-independent scaling; bitmap graphics store fixed pixel grids, causing aliasing and loss of fidelity when enlarged beyond native resolution.

Prompt Grounding rubric:
level_1: No table or screen appears in the shot; no vector-graphic logo or bitmap logo is ever shown; there is no left/right split of any kind; no scaling motion of any logo occurs.
level_2: A table and screen are present, but only one logo (either the vector-graphic or the bitmap version) appears rather than both; or both logos appear but neither one ever scales; or scaling happens on only one side while the other stays static in size; or the two logos are stacked, overlapping, or placed outside the screen instead of split left and right.
level_3: A table and screen are visible; a logo occupies the left half of the screen and a logo occupies the right half; both logos scale up continuously starting from a very small size; however, the logo on one or both sides fails to keep its original shape, symbol, or label consistent throughout the growth (for example, the symbol morphs, a letter changes, or the design is swapped partway through).
level_4: A table and screen are visible; the same logo design (same symbol, proportions, and labeling) appears on both the left and right halves of the screen; both logos start extremely small and grow continuously to a large size without ever disappearing, rotating, or switching which half they occupy; the growth of the two logos is roughly synchronized in timing; the only remaining flaw is a minor setup mismatch, such as the two logos starting at slightly different sizes or growing at a slightly different rate from one another.
level_5: A table and screen are visible for the entire clip; the vector-graphic logo stays fully confined to the left half and the bitmap logo stays fully confined to the right half, and the two match each other exactly in symbol, proportions, and labeling; both logos begin at the same extremely small size and grow continuously and synchronously, reaching matched sizes at every point in time until each fills its half of the screen; neither logo ever drifts across the centerline, rotates, disappears, or is blocked from view.

Scientific and Causal Correctness rubric:
level_1: The vector-graphic logo (left) and the bitmap logo (right) show identical rendering quality at every size sampled in the clip (either both stay crisp or both degrade together), so no resolution-independence contrast is ever visible; or the logos shrink instead of growing; or no scaling happens at all.
level_2: Only one of the two logos actually scales, so the sharpness comparison cannot be judged over time; or both logos scale but show the same fidelity behavior throughout (both crisp, or both equally blocky); or the fidelity roles are reversed, with the bitmap logo staying sharp while the vector-graphic logo is the one that develops blockiness.
level_3: Both logos scale together; the vector-graphic logo stays sharp throughout; the bitmap logo does show some pixelation, but the blockiness only becomes noticeable very late in the growth (for example, only once the logo is nearly full-screen) or appears intermittently rather than steadily worsening, and it lacks clear blocky, stair-stepped edges.
level_4: Both logos scale together; the vector-graphic logo stays sharp and geometrically clean at every size; the bitmap logo begins showing square, blocky artifacts and stair-stepped edges early in its growth, and these artifacts steadily worsen as it enlarges; despite this, the bitmap logo's symbol or lettering remains just barely legible throughout, never fully collapsing into unreadable noise.
level_5: Both logos scale together at matched sizes throughout; the vector-graphic logo stays perfectly crisp, with clean edges and intact fine details (such as thin strokes or serifs) at every size up to full screen; the bitmap logo shows unmistakable, continuously worsening pixelation (square blocks appear early, edges become visibly stair-stepped, and thin lines or fine details blur together or vanish as it grows), and this degradation is confined entirely to the bitmap side, never appearing on the vector-graphic side.

Spatiotemporal Consistency rubric:
level_1: The table or screen disappears partway through the clip; a logo's size jumps discontinuously instead of scaling smoothly; the left and right logos swap sides mid-clip; the screen's lighting suddenly flips between bright and dark with no visible cause; a logo visibly tears, fragments, or splits into disconnected pieces while scaling; or the camera angle or framing cuts or changes abruptly during the scaling.
level_2: A logo's growth stutters or jitters irregularly rather than scaling smoothly; the scaling briefly reverses (a logo shrinks before resuming growth) or pauses and restarts; the screen's brightness flickers erratically; or the table/screen boundary shifts position between frames.
level_3: Scaling is continuous and always growing (never shrinking or freezing) for both logos, and the camera framing stays fixed throughout; however, the growth rate is uneven (for example, fast at the start and noticeably slower near the end), or the logo edges show slight vibration during the fastest part of the growth.
level_4: Scaling proceeds smoothly and steadily for both logos with no pauses, reversals, or stutters; the table and screen frame stay fixed and the camera angle never changes; the left and right logos stay confined to their own half of the screen without drifting toward the center; the only remaining imperfection is a brief motion blur on the faster-growing logo.
level_5: Scaling for both logos is perfectly smooth and continuously growing at a steady, matched pace from the first frame to the full-screen final frame; the camera framing, table, and screen boundary never move or cut at any point; the left/right split line stays fixed the entire time, with neither logo drifting past the midline; there is no stutter, flicker, brightness change, or blur artifact anywhere in the sequence.