ROUND 1
Photo: 千年瑶寨南岗排20151004 - panoramio (79) by Qiu Mao · CC BY 3.0
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# Reconstruction Specification ## 0. Global image description Reconstruct a **single 768 × 512 landscape photograph**, aspect ratio **3:2**, showing a rustic open-sided wood-storage shelter beside an old dark brick wall, surrounded by dense wet-looking green vegetation and muddy ground. The image is documentary and slightly imperfect rather than polished. It should look like an ordinary handheld photograph taken in diffuse overcast daylight, with broad tonal compression, moderate softness, subdued colors, and little dramatic contrast. The primary visual structure is: - A rough timber shelter occupies the middle of the image. - A tall weathered brick wall fills most of the right third and rises into the upper-right corner. - Dense vegetation fills the left edge and lower-left corner. - A handmade horizontal branch/bamboo fence crosses the lower foreground. - Logs, thin poles, and stacked firewood occupy the shelter interior. - The upper center contains a pale, overexposed gray-white sky visible through tree branches. - The ground is dark, damp-looking soil with scattered grass and debris. Do not turn this into a picturesque rural scene, a cinematic frame, or a clean architectural photograph. Preserve the awkward framing, ordinary materials, subdued exposure, visual clutter, and imperfect detail. --- # 1. Composition and geometry ## 1.1 Canvas and framing - Canvas: **768 px wide × 512 px high**. - Landscape orientation, exact aspect ratio approximately **1.50:1**. - Camera is positioned close to the subject, approximately at the height of an adult’s chest or eyes. - Estimated camera height: **1.45–1.65 m above ground**. - Camera is directed approximately horizontally, with a very slight downward inclination toward the foreground fence and ground. - The image is not carefully architecturally leveled. Vertical structures are mostly vertical, but the framing has a mild handheld, casual feel. - The frame is relatively tight around the shelter and wall. The shelter roof nearly reaches the upper-middle region, but the full structure is not isolated from its surrounding vegetation. ## 1.2 Major compositional regions Approximate image-space regions: - **Sky and bright openings:** primarily the top central region, approximately x = 300–525, y = 0–105. The sky is partly obstructed by branches and rooflines. - **Shelter:** approximately x = 145–615, y = 70–405. - **Brick wall:** approximately x = 455–768, y = 0–427, widening toward the right edge. - **Left vegetation:** approximately x = 0–170, y = 0–450, with dense foliage especially from y = 130 downward. - **Foreground fence:** approximately x = 0–730, y = 345–510. - **Ground:** visible primarily in the lower middle and lower-left areas, x = 80–630, y = 360–512. The composition should feel slightly crowded on the right and left, with no clean margin around the shelter. ## 1.3 Main shelter geometry The shelter is an open-front, rough timber structure with a corrugated roof. ### Shelter roof - Main roof mass spans approximately: - leftmost x: **154 px**, or 20.1% of image width; - rightmost x: **615 px**, or 80.1%; - highest visible roof area: approximately y = **71 px**, or 13.9% of image height; - lower front eave: approximately y = **137–170 px**, or 26.8–33.2%. - The roof is not a clean rectangle. It consists of overlapping, sloping corrugated sheets and rough supports. - The left/rear roof section forms a dark pitched shape beginning near x = 161, y = 112 and rising to around x = 275, y = 72, then descending toward the right. - The larger front roof plane projects toward the camera. Its front edge runs roughly from: - x = 158, y = 135 - toward x = 606, y = 158–165. - The front edge is slightly irregular and uneven, not mathematically straight. - Roof thickness and corrugation should be visible as dark, repeated horizontal/diagonal ridges, but not rendered with excessive crispness. - The roof is charcoal brown-gray, nearly black in the shaded underside, with weathered gray highlights on the corrugated upper surfaces. - The roof casts a broad dark shade over the entire open storage area. ### Shelter posts and front supports Approximate major vertical supports: 1. **Left front post** - x ≈ 240–261 px, or 31–34% of width. - Extends from approximately y = 171 to y = 349. - Thick, irregular, medium-dark brown timber. - Slightly tapered and rough, not cylindrical or uniform. 2. **Central-left/front post** - x ≈ 357–379 px, or 46–49% of width. - Extends from y ≈ 173 to y ≈ 350. - Dark brown timber, partly obscured by stored poles. 3. **Right front support / angled support** - around x = 486–536 px, y = 167–353. - Several rough diagonal branches lean toward the ground. - These supports create a messy triangular arrangement rather than a regular frame. 4. Additional thin vertical and diagonal poles are distributed through the shelter, especially x = 380–555 and y = 195–365. The posts should not appear professionally cut, squared, or evenly spaced. Their irregular bark, crookedness, and varying thickness are important. ### Interior firewood - Stacked and bundled wood occupies the central-right shelter interior, approximately x = 371–530, y = 211–348. - There is a dark horizontal stack of short cut logs around x = 422–535, y = 236–324. - Numerous long, thin, rough branches lean vertically and diagonally in front of the stack. - Several poles extend down toward the foreground, forming a visually tangled cluster. - Color range: dark reddish brown, raw tan brown, gray-brown, and muted ochre. - The interior is substantially darker than the exterior vegetation and wall, but should retain visible wood detail. ### Lower shelter edge - The shelter’s lower edge and ground contact sit approximately at y = 340–400. - A horizontal or nearly horizontal rough timber beam runs through the lower front structure around y = 351–374. - The structure is partly obscured by the foreground fence and scattered branches. ## 1.4 Brick wall geometry - The brick wall dominates the right side. - It enters from the upper-right corner and continues down to the lower-right edge. - Approximate visible boundary with the shelter/sky: - upper point near x = 530, y = 0; - descends diagonally leftward to x ≈ 464, y = 105; - then transitions into the wall face behind the shelter. - The wall’s right edge is cropped by the image boundary. - At y ≈ 200, the wall occupies approximately x = 505–768. - At y ≈ 350, it occupies approximately x = 535–768. - At the bottom-right, it occupies approximately x = 620–768, partly hidden by vegetation and fence. The wall is old, uneven, and irregular: - dark gray-brown bricks; - thick, patchy, pale gray mortar; - uneven courses; - chipped edges and inconsistent brick sizes; - occasional darker damp marks; - no clean modern masonry pattern. The wall plane recedes toward a vanishing region approximately around x = 450–480, y = 135–180. Horizontal brick courses should show only mild perspective convergence. Do not make the wall dramatically wide-angle distorted. ## 1.5 Foreground fence geometry The foreground fence is a major compositional element and must remain prominent. It consists of rough horizontal branches or bamboo-like poles tied to irregular vertical stakes. ### Horizontal rails Approximate rail paths: - Upper rail: from x ≈ 0, y ≈ 400 to x ≈ 697, y ≈ 361–375. - Second rail: from x ≈ 0, y ≈ 431 to x ≈ 716, y ≈ 397–413. - Third rail: from x ≈ 0, y ≈ 467 to x ≈ 730, y ≈ 437–453. - Lowest visible rail: from x ≈ 52, y ≈ 499 toward x ≈ 700, y ≈ 478–495. The rails are not perfectly parallel. They sag, bend, and vary in thickness. Their perspective causes them to appear larger and thicker toward the lower-left/near-camera region. ### Fence posts - One prominent vertical post around x ≈ 304–321, extending from y ≈ 347 to the bottom edge. - Another post around x ≈ 660–681, extending from y ≈ 379 to y ≈ 493. - A left-side or cropped support appears near x ≈ 0–35. - Posts are rough, dark reddish-brown branches. - Blue/blue-green tying material is visible around the central post near y ≈ 430–443. Preserve this small, oddly colored detail. - The fence should feel handmade and improvised, not like a standardized agricultural fence. ## 1.6 Vegetation ### Left vegetation - Dense leafy vegetation fills approximately the leftmost 18–22% of the frame. - Strongest concentration: x = 0–125, y = 155–465. - Leaves overlap the shelter’s left edge and partially obscure the lower structure. - The foliage includes broad and small leaves, thin branches, and tangled stems. - It is not a uniform hedge. Use varied leaf sizes, irregular silhouettes, and dark internal gaps. - The left edge contains some tree trunks and branches extending upward into the top-left quadrant. ### Upper trees and branches - Tree canopy and fine branches appear behind and above the shelter, especially: - x = 0–180, y = 0–165; - x = 290–485, y = 0–120. - The upper-center branches are softened against a bright pale sky. - Do not create a clear blue sky. The sky is mostly washed-out gray-white. ### Lower-right vegetation - Sparse green plants and weeds appear around the wall base and fence. - Approximate area: x = 570–768, y = 365–512. - The foliage is less dense than on the left, with dark green leaves mixed with exposed soil and sticks. ## 1.7 Perspective and vanishing points - Perspective is natural and moderately wide, not extreme. - Vertical posts and wall edges remain close to vertical, with only mild lens/camera deviation. - The brick courses and roof edges converge subtly toward the left-middle/central region where the wall recedes. - Approximate architectural vanishing area: **x = 450–500 px, y = 140–190 px**. - The foreground fence rails converge and angle due to their proximity to the camera, but should not form exaggerated one-point perspective. - There is no visible geometric horizon line. The implied eye-level/horizon is approximately **y = 205–240 px**, inferred from the wall and roof perspective, but it is obscured by the shelter. - The camera is aimed slightly downward enough to include the fence and ground, while still showing the roof and upper wall. --- # 2. Lighting ## 2.1 General lighting condition - Lighting is **diffuse overcast daylight**, likely under a bright cloudy sky. - No distinct sun disk is visible. - There are no hard-edged cast shadows. - The scene has a cool, damp, low-directionality appearance. - The shelter roof creates the strongest local shade; this is structural shade rather than sharply defined sunlight. - Light appears to come broadly from above and from the front/top-left, but the direction is weak and highly diffused. ## 2.2 Sun direction and elevation Because the sky is overcast, the exact sun position is not visually recoverable. Reconstruct it as: - Effective illumination from the **upper front-left and upper center**. - Approximate effective elevation: **45–65 degrees**, heavily diffused by cloud cover. - Do not produce visible directional sun rays. - Do not create bright warm sunlight on the wall or fence. - Do not produce sharp shadows beneath the fence rails or trees. ## 2.3 Shadow behavior - Shadow edges are broad, soft, and low contrast. - The underside of the corrugated roof is the darkest large region. - Interior shadow values are approximately RGB **35–60**, with brown/green contamination. - The ground beneath the shelter is dark but not pure black. - Vegetation shadows are mottled and soft rather than graphic. - Fence rails do not cast sharply legible shadows; they blend into the dark ground and vegetation. - Preserve local darkness under the roof, but do not crush all interior detail. ## 2.4 Relative brightness Approximate relative luminance ordering: 1. Pale sky openings and bright background behind upper branches. 2. Light gray portions of the weathered wall and pale vegetation highlights. 3. Green foliage and exposed roof surfaces. 4. Midtone timber and brick faces. 5. Shelter interior and roof underside. 6. Dark muddy ground and deepest wood/foliage gaps. The sky is brighter than most of the image and is partially close to clipping. The shelter interior is much darker than the sky, but the total image remains low-to-moderate contrast due to overcast illumination. --- # 3. Color rendering ## 3.1 White balance and color cast - Overall white balance: **cool-neutral to slightly green-cyan**. - The image does not have a warm golden cast. - Vegetation carries a muted cool green. - Brick and timber are subdued brown-gray rather than warm orange. - The bright sky and wall highlights can lean slightly cyan or pale blue-gray. - Avoid magenta, orange, amber, or cinematic teal-orange grading. Estimated global color temperature: approximately **6000–7000 K equivalent**, but with greenish environmental contamination and overcast diffusion. ## 3.2 Saturation - Overall saturation: **low to moderate**, approximately 70–85% of a vivid natural-color photograph. - Greens are visible but not lush or neon. - Browns are muted and somewhat gray. - Brick colors are desaturated. - The image should not resemble an aggressively color-corrected DSLR photograph. - Avoid boosting foliage saturation or selectively intensifying the blue-gray sky. ## 3.3 Representative colors These values are approximate target colors, not flat fills. Use them as local average tendencies. ### Sky and bright openings - Bright overcast sky: approximately **RGB 205, 216, 214**, HEX **#CDD8D6**. - Near the brightest upper-center gaps: approximately **RGB 225, 231, 225**, HEX **#E1E7E1**. - Some areas may approach **RGB 235, 238, 231**, but should not become a clean white studio background. - Sky should be pale gray-green/cyan, not saturated blue. ### Vegetation - Mid green foliage: **RGB 67, 108, 72**, HEX **#436C48**. - Dark green shadow foliage: **RGB 30, 61, 39**, HEX **#1E3D27**. - Muted leaf highlights: **RGB 103, 143, 99**, HEX **#678F63**. - Some leaves may appear yellow-green: **RGB 113, 142, 86**, HEX **#718E56**. - Avoid rich emerald or tropical green. ### Mud and ground - Dark soil: **RGB 54, 50, 39**, HEX **#363227**. - Damp brown-black ground: **RGB 39, 39, 32**, HEX **#272720**. - Small grass patches: **RGB 73, 103, 55**, HEX **#496737**. - Do not make the ground red, orange, or cleanly textured. ### Wall - Average dark brick: **RGB 74, 73, 62**, HEX **#4A493E**. - Cool gray-brown brick: **RGB 91, 94, 82**, HEX **#5B5E52**. - Dark mortar and recesses: **RGB 47, 52, 47**, HEX **#2F342F**. - Pale weathered mortar/highlights: **RGB 139, 143, 127**, HEX **#8B8F7F**. - Occasional muted reddish brick: **RGB 105, 79, 66**, HEX **#694F42**. - Keep the wall predominantly gray, charcoal, olive-gray, and subdued brown. ### Timber and branches - Dark roof timber: **RGB 47, 42, 34**, HEX **#2F2A22**. - Medium raw wood: **RGB 105, 72, 48**, HEX **#694830**. - Reddish-brown logs: **RGB 118, 69, 46**, HEX **#76452E**. - Pale stripped branches: **RGB 157, 128, 88**, HEX **#9D8058**. - Wet/dark bark: **RGB 65, 48, 36**, HEX **#413024**. - Do not make the timber golden, polished, varnished, or orange. ### Fence - Rough rails: muted reddish tan and gray-brown, approximately **RGB 125, 87, 59**. - Darker rail surfaces: **RGB 75, 57, 42**. - Tie material: muted blue-cyan, approximately **RGB 35, 105, 121**, HEX **#236979**. - The blue tie is a small isolated accent, not a global color theme. ## 3.4 Color variation - Maintain irregular natural color variation in bricks, leaves, branches, and mud. - Do not apply a uniform green filter. - Do not color-grade all shadows blue. - Do not warm the wall to orange. - Do not make the foliage more saturated than the reference. - Bright surfaces should be slightly washed and grayish, consistent with humid overcast conditions. --- # 4. Tone and exposure ## 4.1 Overall exposure - Overall exposure is approximately correct to slightly bright in the sky and upper background. - The foreground and shelter interior are comparatively dark. - The image has a mild exposure imbalance: bright sky/background versus shaded shelter. - Do not recover the sky into a detailed blue-gray cloudscape. - Do not brighten the shelter interior until all wood is equally visible. ## 4.2 Dynamic range - Moderate dynamic range, with some compression. - Bright sky regions are close to clipping or have very weak cloud detail. - Shadows retain some detail but are dense and muddy. - The image is not HDR. - There is no deep, clean black except in small roof/interior gaps. - Do not create a dramatic high-dynamic-range effect. ## 4.3 Black point and shadows - Black point is slightly lifted in some dark areas, but the deepest shelter gaps remain close to black. - Approximate deepest values: RGB **25–35**. - Most dark regions should sit around RGB **40–65**. - Shadow coloration is green-brown/charcoal rather than pure neutral black. - Avoid crushing all shadow detail. - Avoid lifting the shadows so much that the shelter becomes evenly exposed. ## 4.4 White point and highlights - White point is high in the upper-center sky, approximately RGB **220–240** in the brightest areas. - Wall highlights and pale foliage remain below full white, generally RGB **150–190**. - Highlights are slightly hazy and diffuse, not crisp or sparkling. - Avoid hard clipped white areas except for a few small sky gaps. - Do not produce glossy specular highlights on wood or wet leaves. ## 4.5 Contrast and gamma - Global contrast: low-to-moderate. - Midtones are somewhat bright and gray, especially foliage and wall. - Local contrast is present in the brick courses and wood pile but softened by image quality and diffuse lighting. - Gamma/midtone appearance: approximately neutral to slightly lifted. - Tonal curve should have: - gently compressed highlights; - moderately dense shadows; - low-to-medium midtone contrast; - no S-curve cinematic grade. - Preserve a flat documentary feel. --- # 5. Camera and lens characteristics ## 5.1 Focal length and field of view Estimated lens: - Full-frame equivalent focal length: approximately **24–30 mm**. - Most likely target: around **26–28 mm equivalent**. - Horizontal field of view: approximately **65–72 degrees**. - The lens is wide enough to include the near fence and large wall in a tight frame, but not so wide that the architecture is dramatically distorted. ## 5.2 Perspective - Near foreground fence rails are noticeably enlarged relative to distant structure. - The shelter remains recognizable and moderately natural in proportion. - Mild wide-angle perspective is present, especially around the left and right edges. - Do not use an ultra-wide 16–20 mm equivalent appearance. - Do not flatten the image with a telephoto lens. ## 5.3 Depth of field - Depth of field is broad: - foreground fence is reasonably legible; - shelter and wood pile remain visible; - brick wall is recognizable throughout. - However, fine detail is softened by the lens/image quality, not necessarily by strong optical defocus. - Background branches and distant foliage are slightly softer than the front fence and shelter. - Do not create strong portrait-style bokeh. - Do not isolate the shelter with a shallow depth of field. ## 5.4 Distortion and optical behavior - Mild barrel distortion may be present near the outer edges, especially in the fence rails and wall boundary. - Vertical lines remain mostly straight, with subtle edge deformation. - No strong fisheye distortion. - Mild corner softness and possible vignetting, but no obvious blackened corners. - Vignetting estimate: approximately **5–10% luminance falloff** toward corners, partially masked by dark vegetation and wall. - Possible mild chromatic aberration around high-contrast branch/sky boundaries, but it should be subtle: - faint cyan/red or purple fringe at some upper branches and roof edges; - not a pronounced digital effect. ## 5.5 Camera type impression The result should resemble a **consumer digital camera or ordinary handheld compact/phone photograph**, possibly subsequently resized or compressed: - not a modern high-end full-frame image; - not a carefully stabilized architectural capture; - not a smartphone HDR image; - not a professional RAW conversion. The camera may have moderate sensor noise and limited highlight recovery. Preserve slight softness and uneven exposure. --- # 6. Image texture and processing ## 6.1 Sharpness - Global sharpness: **moderate to slightly soft**. - Edge sharpness is present on nearer fence rails, roof edges, and brick courses, but not razor sharp. - Fine bark fibers, leaf veins, and mortar texture are visible only inconsistently. - Do not apply excessive clarity or texture enhancement. - The image should retain a mild veil of softness from diffuse light, lens quality, and resizing. ## 6.2 Microcontrast - Brick wall has moderate local pattern contrast, but individual bricks are not hyper-detailed. - Wood pile has readable structure but merges in darker areas. - Vegetation is somewhat mushy in shadow. - Microcontrast should be lower than a professionally sharpened modern photograph. ## 6.3 Noise and grain - Add subtle fine digital noise, especially in: - dark shelter interior; - shaded ground; - dark foliage; - wall recesses. - Noise should be low amplitude, approximately 1–3% luminance variation. - It may have slight chroma noise in dark regions, but avoid obvious film grain. - Do not make the photograph perfectly clean. ## 6.4 Denoising and smearing - Some fine foliage and branches may appear mildly smoothed or smeared from low-resolution capture, denoising, or compression. - Keep small leaves somewhat indistinct in deep shade. - Avoid reconstructing every leaf as a crisp, individually designed object. ## 6.5 Compression and resampling - Include mild JPEG-like or resizing artifacts: - slight blockiness or soft edge transitions in dark foliage; - minor loss of tiny brick and leaf detail; - occasional ringing/soft halo around high-contrast roof or branch boundaries. - Artifacts must remain subtle and photographic, not visibly degraded. - The final image should look like a modest-resolution image, not a pristine 8K render. ## 6.6 Sharpening - Use restrained sharpening. - Very mild edge halos may appear around: - roof silhouette; - fence rails; - brick boundaries; - high-contrast branches against the sky. - Do not apply strong AI-style edge outlining. - Do not make every branch and brick artificially crisp. --- # 7. Photographic character The defining character is an **ordinary, slightly soft, overcast documentary photograph of a neglected or improvised rural structure**. Important characteristics that distinguish it from an idealized reconstruction: 1. **Uneven exposure** - The sky is too bright relative to the shaded shelter. - The interior remains dark and visually dense. - Do not normalize the exposure across the entire scene. 2. **Unrefined framing** - The brick wall is cropped heavily on the right. - The vegetation crowds the left edge. - The shelter is centered but not perfectly symmetrical. - The foreground fence occupies a large portion of the lower frame and partially obstructs the structure. 3. **Material irregularity** - Posts are crooked and inconsistent. - Branches vary in thickness and angle. - Roof edges sag and are uneven. - The fence is handmade and loosely assembled. - Bricks are chipped, mismatched, damp-looking, and irregularly mortared. 4. **Muted environmental color** - Greens are subdued. - Browns are grayish and dark. - The wall is cool gray-brown. - The sky has little color and looks washed out. 5. **Softness and limited resolution** - Fine leaves, bark, and mortar are not perfectly resolved. - Shadow detail merges in places. - The photograph should not look like an ultra-sharp professional real-estate or travel image. 6. **No dramatic weather or cinematic mood** - It is cloudy and damp-looking, but not stormy. - There are no dramatic sunbeams, rich clouds, or deep cinematic blacks. - The mood comes from age, clutter, shade, and subdued color—not from stylized grading. 7. **Visual clutter** - Preserve tangled poles, overlapping fence rails, scattered branches, muddy ground, and partial occlusions. - Do not simplify the scene into a clean shelter against a wall. 8. **Small incidental details** - Preserve the small blue tie around the central foreground post. - Preserve isolated pale branches among the dark wood. - Preserve irregular brick tones. - Preserve gaps in the foliage and the dark recess beneath the roof. --- # 8. Anti-beautification instructions The generator must **not** improve or idealize the image in any of the following ways: - Do not make the sky bluer, more saturated, or more dramatic. - Do not add visible clouds with defined sculptural edges. - Do not create sun rays, golden-hour illumination, or warm sunlight. - Do not warm the architecture, brick wall, or timber. - Do not make the wall redder, cleaner, more uniform, or more historically picturesque. - Do not increase saturation in the vegetation. - Do not make the foliage lush, tropical, glossy, or emerald green. - Do not increase global contrast. - Do not deepen shadows into cinematic black. - Do not lift all shadows to reveal every detail. - Do not create HDR tonemapping. - Do not add clarity, local contrast, or artificial texture. - Do not make the roof corrugation razor sharp. - Do not make every brick individually crisp and evenly exposed. - Do not straighten or regularize the crooked fence. - Do not align the fence rails into perfectly parallel lines. - Do not replace rough branches with manufactured lumber. - Do not clean up the muddy ground, stray sticks, weeds, or debris. - Do not remove the foreground fence obstruction. - Do not simplify or declutter the stacked firewood. - Do not make the shelter symmetrical. - Do not repair the roof into a neat architectural form. - Do not remove chipped bricks, patchy mortar, stains, or irregular wall courses. - Do not introduce polished wood, varnish, metal hardware, or clean construction. - Do not add flowers, decorative objects, tools, people, animals, or vehicles. - Do not use shallow depth of field or strong background blur. - Do not apply a cinematic teal-and-orange grade. - Do not apply a film-emulation look with pronounced grain or halation. - Do not make the image look like a professional real-estate photograph. - Do not make the image look like a high-end landscape photograph. - Do not make the image cleaner, sharper, brighter, warmer, more colorful, more symmetrical, or more dramatic than the supplied reference. ## Compact generation target **A 768×512 handheld consumer-camera photograph under cool diffuse overcast light: a rough open-front timber wood shelter with a dark corrugated roof, tangled firewood, an aged gray-brown brick wall occupying the right side, dense muted green vegetation on the left, muddy ground, and an improvised branch fence crossing the foreground. Moderate wide-angle perspective, broad depth of field, slightly soft low-resolution rendering, muted cool-green/brown palette, bright washed-out sky, dense but not crushed shadows, low-to-moderate contrast, mild compression and lens imperfections, no beautification or cinematic enhancement.**