优化

libs/MVS/SceneTexture.cpp

@@ -760,7 +760,9 @@ public:
 		const Mesh::TexCoordArr& existingTexcoords,  // 添加已有UV参数
 		const Mesh::TexIndexArr& existingTexindices   // 添加已有纹理索引参数
 	);
-
+	std::vector<uint32_t> faceToPatchID;  // faceID → 新 patchID 映射
+	void MergeSameViewPatches();
+	void RunSeamLevelingOnAtlas(Image8U3& atlas, int textureSize);
 	bool RasterizeVirtualFaces(
     const VirtualFaceMap& virtualFaceMap,
     const std::vector<std::vector<IIndex>>& virtualFaceViews,
@@ -768,6 +770,12 @@ public:
     unsigned nTextureSizeMultiple,
     Pixel8U colEmpty,
     Mesh::Image8U3Arr& outTextures);
+	void BuildStandardSeamDataFromRCPatches(
+		const VirtualFaceMap& virtualFaceMap,
+		const std::vector<std::vector<IIndex>>& virtualFaceViews,
+		int textureSize);
+	void GlobalAlignPatches(Image8U3& atlas, int textureSize);
+	void LocalBlendSeams(Image8U3& atlas, int textureSize);
 	void FeatherTextureSeams(Image8U3& texture,
                                 const std::vector<IIndex>& texelPatchID,
                                 int textureSize,
@@ -775,6 +783,7 @@ public:
 	void AlignPatchColors(Image8U3& atlas,
                               const std::vector<IIndex>& texelPatchID,
                               int textureSize);
+	void SmoothAtlasPatchBoundaries(Image8U3& atlas, int textureSize);
 	void GlobalPatchColorAlignment(Image8U3& atlas, int textureSize);
 	void LocalSeamBlending(Image8U3& atlas, int textureSize);
     std::vector<Color> patchAvgColor;        // ← 直接声明 vector，不要加括号！
@@ -14479,6 +14488,100 @@ void MeshTexture::LocalSeamBlending(Image8U3& atlas, int textureSize)
     DEBUG_EXTRA("Local blending done (%s)", TD_TIMER_GET_FMT().c_str());
 }
 
+// ============================================================
+// 直接在 atlas 上做 patch 边界颜色扩散
+// 不依赖 seamEdges，只用 m_texelPatchID
+// ============================================================
+void MeshTexture::SmoothAtlasPatchBoundaries(Image8U3& atlas, int textureSize)
+{
+    if (m_texelPatchID.empty()) return;
+    
+    const int bandWidth = 16;  // 边界混合带宽度
+    
+    // 1. 标记所有 patch 边界像素（4-邻域内 m_texelPatchID 不同的像素）
+    std::vector<uint8_t> isBoundary(textureSize * textureSize, 0);
+    
+    for (int y = 1; y < textureSize - 1; ++y) {
+        for (int x = 1; x < textureSize - 1; ++x) {
+            size_t idx = y * textureSize + x;
+            int pid = m_texelPatchID[idx];
+            if (pid == NO_ID) continue;
+            
+            // 检查 4-邻域
+            int nb[4] = {
+                m_texelPatchID[(y-1)*textureSize + x],
+                m_texelPatchID[(y+1)*textureSize + x],
+                m_texelPatchID[y*textureSize + (x-1)],
+                m_texelPatchID[y*textureSize + (x+1)]
+            };
+            
+            for (int n = 0; n < 4; ++n) {
+                if (nb[n] != NO_ID && nb[n] != pid) {
+                    isBoundary[idx] = 1;
+                    break;
+                }
+            }
+        }
+    }
+    
+    // 2. 对每个边界像素，向邻居 patch 的颜色做距离加权混合
+    //    用多次迭代扩散，让颜色在边界两侧渐变
+    Image8U3 atlasNew = atlas.clone();
+    
+    for (int iter = 0; iter < 3; ++iter) {
+        #pragma omp parallel for
+        for (int y = 1; y < textureSize - 1; ++y) {
+            for (int x = 1; x < textureSize - 1; ++x) {
+                size_t idx = y * textureSize + x;
+                if (!isBoundary[idx]) continue;
+                
+                int pid = m_texelPatchID[idx];
+                if (pid == NO_ID) continue;
+                
+                // 收集邻居中属于不同 patch 的像素颜色
+                int count = 0;
+                cv::Vec3f sumColor(0, 0, 0);
+                float weightSum = 0;
+                
+                // 3x3 邻域
+                for (int dy = -1; dy <= 1; ++dy) {
+                    for (int dx = -1; dx <= 1; ++dx) {
+                        if (dx == 0 && dy == 0) continue;
+                        int nx = x + dx, ny = y + dy;
+                        size_t nidx = ny * textureSize + nx;
+                        int npid = m_texelPatchID[nidx];
+                        if (npid == NO_ID || npid == pid) continue;
+                        
+                        const Pixel8U& npx = atlas(ny, nx);
+                        if (npx[0] < 5 && npx[1] < 5 && npx[2] < 5) continue;
+                        
+                        float w = 1.0f / (dx*dx + dy*dy + 1);
+                        sumColor[0] += npx[2] * w;
+                        sumColor[1] += npx[1] * w;
+                        sumColor[2] += npx[0] * w;
+                        weightSum += w;
+                        count++;
+                    }
+                }
+                
+                if (count > 0 && weightSum > 0) {
+                    // 混合比例：边界像素保留 70%，从邻居吸收 30%
+                    const float blendFactor = 0.3f;
+                    Pixel8U& px = atlasNew(y, x);
+                    const Pixel8U& orig = atlas(y, x);
+                    
+                    px[2] = cv::saturate_cast<uchar>(orig[2] * (1 - blendFactor) + (sumColor[0] / weightSum) * blendFactor);
+                    px[1] = cv::saturate_cast<uchar>(orig[1] * (1 - blendFactor) + (sumColor[1] / weightSum) * blendFactor);
+                    px[0] = cv::saturate_cast<uchar>(orig[0] * (1 - blendFactor) + (sumColor[2] / weightSum) * blendFactor);
+                }
+            }
+        }
+        atlas = atlasNew.clone();
+    }
+    
+    DEBUG_EXTRA("SmoothAtlasPatchBoundaries: boundary blending done");
+}
+
 // ===== 全局 Patch 颜色对齐 =====
 // 在 seam edge 上采样两侧 patch 的颜色，求解每个 patch 的偏移量
 void MeshTexture::GlobalPatchColorAlignment(Image8U3& atlas, int textureSize)
@@ -14689,6 +14792,182 @@ void MeshTexture::FeatherTextureSeams(Image8U3& texture,
         }
     }
 }
+void MeshTexture::MergeSameViewPatches()
+{
+    const size_t numPatches = rcPatches.size();
+    if (numPatches == 0) return;
+
+    const size_t numFaces = scene.mesh.faces.size();  // ★ 提前定义
+
+    if (faceFaces.empty()) {
+        scene.mesh.ListIncidenteFaceFaces();
+    }
+
+    // ---- Union-Find ----
+    std::vector<size_t> parent(numPatches);
+    std::iota(parent.begin(), parent.end(), 0);
+
+    auto Find = [&](size_t x) -> size_t {
+        while (parent[x] != x) {
+            parent[x] = parent[parent[x]];
+            x = parent[x];
+        }
+        return x;
+    };
+
+    auto Union = [&](size_t a, size_t b) {
+        a = Find(a);
+        b = Find(b);
+        if (a != b) parent[b] = a;
+    };
+
+    // ---- 合并同 view 相邻 patch ----
+    for (size_t i = 0; i < numPatches; ++i) {
+        const RCPatch& patch = rcPatches[i];
+        if (patch.faces.empty()) continue;
+
+        const FIndex faceID = patch.faces[0];
+        if (faceID >= faceFaces.size()) continue;
+
+        const Mesh::FaceFaces& adjFaces = faceFaces[faceID];
+        for (int e = 0; e < 3; ++e) {
+            const FIndex adjFaceID = adjFaces[e];
+            if (adjFaceID == NO_ID || adjFaceID >= (FIndex)numPatches) continue;
+            if (rcPatches[adjFaceID].viewID == patch.viewID) {
+                Union(i, adjFaceID);
+            }
+        }
+    }
+
+    // ★ 构建旧 patch ID → 新 patch ID 的映射
+    std::vector<uint32_t> oldToNew(numPatches, UINT32_MAX);
+    uint32_t newIdx = 0;
+    for (size_t i = 0; i < numPatches; ++i) {
+        if (Find(i) == i) {
+            oldToNew[i] = newIdx++;
+        }
+    }
+    for (size_t i = 0; i < numPatches; ++i) {
+        oldToNew[i] = oldToNew[Find(i)];
+    }
+
+    // ---- 收集合并后的 groups，生成新 rcPatches ----
+    std::map<size_t, std::vector<size_t>> groups;
+    for (size_t i = 0; i < numPatches; ++i) {
+        groups[Find(i)].push_back(i);
+    }
+
+    std::vector<RCPatch> newPatches;
+    newPatches.reserve(groups.size());
+    for (const auto& [root, indices] : groups) {
+        RCPatch merged;
+        merged.viewID = rcPatches[root].viewID;
+        for (size_t idx : indices) {
+            merged.faces.insert(merged.faces.end(),
+                                rcPatches[idx].faces.begin(),
+                                rcPatches[idx].faces.end());
+        }
+        int minX = INT_MAX, minY = INT_MAX, maxX = 0, maxY = 0;
+        for (size_t idx : indices) {
+            const cv::Rect& r = rcPatches[idx].rect;
+            minX = std::min(minX, r.x);
+            minY = std::min(minY, r.y);
+            maxX = std::max(maxX, r.x + r.width);
+            maxY = std::max(maxY, r.y + r.height);
+        }
+        if (minX < maxX && minY < maxY) {
+            merged.rect = cv::Rect(minX, minY, maxX - minX, maxY - minY);
+        }
+        newPatches.push_back(std::move(merged));
+    }
+
+    const size_t newPatchCount = newPatches.size();  // ★ 保存，move 后就拿不到了
+
+    DEBUG_EXTRA("MergeSameViewPatches: %zu → %zu patches (%.1f%% reduction)",
+                numPatches, newPatchCount,
+                100.0 * (1.0 - (double)newPatchCount / numPatches));
+
+    // ★★★ 在 std::move 之前，用 newPatches 构建 faceToPatchID ★★★
+    faceToPatchID.assign(numFaces, UINT32_MAX);
+    for (uint32_t newPatchID = 0; newPatchID < (uint32_t)newPatchCount; ++newPatchID) {
+        for (FIndex faceID : newPatches[newPatchID].faces) {
+            if (faceID < numFaces)
+                faceToPatchID[faceID] = newPatchID;
+        }
+    }
+    DEBUG_EXTRA("faceToPatchID built: %zu faces mapped", numFaces);
+
+    // ★★★ m_texelPatchID 重映射（用 oldToNew，不依赖 newPatches）★★★
+    if (!m_texelPatchID.empty()) {
+        for (uint32_t& pid : m_texelPatchID) {
+            if (pid != NO_ID && pid < (uint32_t)numPatches) {
+                pid = oldToNew[pid];
+            }
+        }
+    }
+
+    // ★★★ 现在才 move ★★★
+    rcPatches = std::move(newPatches);
+    // 从此以后 newPatches 是空的，不要再用了
+
+    // ★ 更新 rcSeamEdges（用 oldToNew + rcPatches.size()）
+    if (!rcSeamEdges.empty()) {
+        for (SeamEdge& edge : rcSeamEdges) {
+            if (edge.rcPatchID0 != UINT32_MAX && edge.rcPatchID0 < (uint32_t)numPatches)
+                edge.rcPatchID0 = oldToNew[edge.rcPatchID0];
+            if (edge.rcPatchID1 != UINT32_MAX && edge.rcPatchID1 < (uint32_t)numPatches)
+                edge.rcPatchID1 = oldToNew[edge.rcPatchID1];
+        }
+        rcSeamEdges.erase(
+            std::remove_if(rcSeamEdges.begin(), rcSeamEdges.end(),
+                [](const SeamEdge& e) { return e.rcPatchID0 == e.rcPatchID1; }),
+            rcSeamEdges.end()
+        );
+        DEBUG_EXTRA("rcSeamEdges remapped: %zu edges remaining", rcSeamEdges.size());
+    }
+
+    // ★ 调试断言
+    #ifdef _DEBUG
+    const size_t patchCount = rcPatches.size();
+    for (const SeamEdge& e : rcSeamEdges) {
+        ASSERT(e.rcPatchID0 < patchCount);
+        ASSERT(e.rcPatchID1 < patchCount);
+    }
+    for (uint32_t pid : m_texelPatchID) {
+        if (pid != UINT32_MAX) ASSERT(pid < patchCount);
+    }
+    #endif
+
+    DEBUG_EXTRA("m_texelPatchID remapped, rcPatches now has %zu patches", rcPatches.size());
+}
+
+void MeshTexture::RunSeamLevelingOnAtlas(Image8U3& atlas, int textureSize)
+{
+    // 保存原始 label
+    std::vector<IIndex> savedLabels(texturePatches.size());
+    for (size_t i = 0; i < texturePatches.size(); ++i)
+        savedLabels[i] = texturePatches[i].label;
+
+    // 把 atlas 作为临时图像插入 images
+    const size_t atlasIdx = images.size();
+    Image atlasImg;
+    atlasImg.image = atlas;  // cv::Mat 引用，不拷贝
+    images.push_back(atlasImg);
+
+    // 所有 patch 指向 atlas
+    for (size_t i = 0; i < texturePatches.size() - 1; ++i)
+        texturePatches[i].label = (IIndex)atlasIdx;
+
+    // 执行接缝消除（直接修改 atlas 像素）
+    GlobalSeamLeveling3();
+    LocalSeamLeveling3();
+
+    // 恢复
+    for (size_t i = 0; i < savedLabels.size(); ++i)
+        texturePatches[i].label = savedLabels[i];
+    images.pop_back();
+}
+
 // ============================================================
 // 3. RC 风格光栅化主函数（含接缝优化）
 // ============================================================
@@ -14893,26 +15172,239 @@ bool MeshTexture::RasterizeVirtualFaces(
 		AlignPatchColors(atlas, m_texelPatchID, textureSize);
 	}
 
-    // 5/6/7. 接缝
-    BuildSeamEdgesFromRCPatches();
-    if (!rcSeamEdges.empty()) {
-        DEBUG_EXTRA("Before GlobalAlign: rcSeamEdges=%zu, patchAvgColor=%zu",
-            rcSeamEdges.size(), patchAvgColor.size());
-        GlobalPatchColorAlignment(atlas, textureSize);
-        LocalSeamBlending(atlas, textureSize);
-    }
+    // // 5/6/7. 接缝
+    // BuildSeamEdgesFromRCPatches();
+    // if (!rcSeamEdges.empty()) {
+    //     DEBUG_EXTRA("Before GlobalAlign: rcSeamEdges=%zu, patchAvgColor=%zu",
+    //         rcSeamEdges.size(), patchAvgColor.size());
+    //     GlobalPatchColorAlignment(atlas, textureSize);
+    //     LocalSeamBlending(atlas, textureSize);
+    // }
 
-    if (!seamEdges.empty()) {
-        TD_TIMER_START();
-        SeamBlendingFromOriginalImages(atlas);
-        DEBUG_EXTRA("Seam blending completed: %zu edges (%s)", seamEdges.size(), TD_TIMER_GET_FMT().c_str());
-    }
+    // if (!seamEdges.empty()) {
+    //     TD_TIMER_START();
+    //     SeamBlendingFromOriginalImages(atlas);
+    //     DEBUG_EXTRA("Seam blending completed: %zu edges (%s)", seamEdges.size(), TD_TIMER_GET_FMT().c_str());
+    // }
+
+	// 在 rasterization 循环结束后、SmoothAtlasPatchBoundaries 之前加：
+	int validPixels = 0;
+	for (size_t i = 0; i < m_texelPatchID.size(); ++i)
+		if (m_texelPatchID[i] != NO_ID) validPixels++;
+	DEBUG_EXTRA("m_texelPatchID: %d valid pixels out of %zu", validPixels, m_texelPatchID.size());
+
+	// SmoothAtlasPatchBoundaries(atlas, textureSize);
 
 	// AlignPatchColors(atlas, m_texelPatchID, textureSize);
 	// FeatherTextureSeams(atlas, m_texelPatchID, textureSize, 3);
     return true;
 }
+void MeshTexture::GlobalAlignPatches(Image8U3& atlas, int textureSize) {
+    const size_t NP = rcPatches.size();
+    if (NP == 0 || rcSeamEdges.empty()) return;
 
+    // 每个 patch 有一个颜色增益 g_i，初始为 1.0
+    std::vector<float> gain(NP, 1.0f);
+    
+    // 用 patch 的平均颜色作为参考
+    std::vector<cv::Vec3f> avgColor(NP, cv::Vec3f(0,0,0));
+    for (size_t i = 0; i < NP; ++i) {
+        if (patchAvgColor.size() > i) {
+            avgColor[i] = patchAvgColor[i];  // 你之前算过的 patchAvgColor
+        }
+    }
+
+    // 简单迭代求解：让相邻 patch 在接缝处颜色一致
+    for (int iter = 0; iter < 10; ++iter) {
+        std::vector<float> newGain(NP, 0.0f);
+        std::vector<int> count(NP, 0);
+        
+        for (const SeamEdge& edge : rcSeamEdges) {
+            const uint32_t a = edge.rcPatchID0;
+            const uint32_t b = edge.rcPatchID1;
+            if (a >= NP || b >= NP) continue;
+            if (a == b) continue;
+            
+            // 目标：gain[a] * avgColor[a] ≈ gain[b] * avgColor[b]
+            // 用 avgColor 的比值更新
+            const cv::Vec3f& ca = avgColor[a];
+            const cv::Vec3f& cb = avgColor[b];
+            for (int c = 0; c < 3; ++c) {
+                if (ca[c] > 1e-6f && cb[c] > 1e-6f) {
+                    const float ratio = cb[c] / ca[c];
+                    newGain[a] += ratio * gain[b];
+                    count[a]++;
+                }
+            }
+        }
+        
+        for (size_t i = 0; i < NP; ++i) {
+            if (count[i] > 0) {
+                gain[i] = newGain[i] / count[i];
+            }
+        }
+    }
+
+    // 应用增益到 atlas：遍历每个 patch 的像素，乘上 gain
+    for (size_t i = 0; i < NP; ++i) {
+        const cv::Rect& r = rcPatches[i].rect;
+        if (r.x < 0 || r.y < 0 || r.x + r.width > atlas.cols || r.y + r.height > atlas.rows)
+            continue;
+        
+        cv::Mat patch = atlas(r);
+        const float g = std::clamp(gain[i], 0.5f, 2.0f);
+        patch.convertTo(patch, CV_32FC3);
+        patch *= g;
+        patch.convertTo(patch, CV_8UC3);
+    }
+    
+    DEBUG_EXTRA("GlobalAlignPatches: %zu patches aligned", NP);
+}
+void MeshTexture::LocalBlendSeams(Image8U3& atlas, int textureSize) {
+    // ★ 包装为 cv::Mat
+    cv::Mat atlasMat(atlas.cols, atlas.rows, CV_8UC3, atlas.data);
+
+    const int blendWidth = 4;
+
+    for (const SeamEdge& edge : rcSeamEdges) {
+        const uint32_t a = edge.rcPatchID0;
+        const uint32_t b = edge.rcPatchID1;
+        if (a >= rcPatches.size() || b >= rcPatches.size()) continue;
+
+        const cv::Rect& ra = rcPatches[a].rect;
+        const cv::Rect& rb = rcPatches[b].rect;
+        cv::Rect overlap = ra & rb;
+        if (overlap.area() == 0) continue;
+
+        // 在重叠区域做线性混合
+        for (int y = 0; y < overlap.height; ++y) {
+            for (int x = 0; x < overlap.width; ++x) {
+                const float t = (float)x / overlap.width;
+                const cv::Vec3b& ca = atlasMat.at<cv::Vec3b>(ra.y + y, ra.x + x);
+                const cv::Vec3b& cb = atlasMat.at<cv::Vec3b>(rb.y + y, rb.x + x);
+                atlasMat.at<cv::Vec3b>(overlap.y + y, overlap.x + x) = cv::Vec3b(
+                    (uint8_t)(ca[0] * (1 - t) + cb[0] * t),
+                    (uint8_t)(ca[1] * (1 - t) + cb[1] * t),
+                    (uint8_t)(ca[2] * (1 - t) + cb[2] * t)
+                );
+            }
+        }
+    }
+
+    DEBUG_EXTRA("LocalBlendSeams: %zu edges blended", rcSeamEdges.size());
+}
+// ============================================================
+// 把 rcPatches 体系转换为标准 texturePatches + seamVertices 体系
+// 必须在 RasterizeVirtualFaces() 完成后调用
+// ============================================================
+void MeshTexture::BuildStandardSeamDataFromRCPatches(
+    const VirtualFaceMap& virtualFaceMap,
+    const std::vector<std::vector<IIndex>>& virtualFaceViews,
+    int textureSize)
+{
+    const size_t numFaces = scene.mesh.faces.size();
+    const size_t NP = rcPatches.size();
+
+    // ---- 1. texturePatches（最后一个是哨兵）----
+    texturePatches.clear();
+    texturePatches.resize(NP + 1);
+    for (size_t i = 0; i < NP; ++i) {
+        TexturePatch& tp = texturePatches[i];
+        tp.label = rcPatches[i].viewID;
+        tp.rect  = rcPatches[i].rect;
+        // ★ 用 Insert 逐个拷贝，避免 cList 赋值问题
+        tp.faces.clear();
+        for (FIndex fid : rcPatches[i].faces) {
+            tp.faces.Insert(fid);
+        }
+    }
+    // 哨兵 patch（最后一个）
+    texturePatches[NP].label = NO_ID;
+
+    // ---- 2. mapIdxPatch：每个 face → 所属 patch ----
+    // ★ 用 faceToPatchID（Merge 时已构建好），不要重新扫描
+    mapIdxPatch.resize(numFaces);
+    for (size_t fid = 0; fid < numFaces; ++fid) {
+        mapIdxPatch[fid] = (faceToPatchID[fid] != UINT32_MAX) 
+                           ? faceToPatchID[fid] 
+                           : (uint32_t)NP;  // 未映射 → 指向哨兵
+    }
+
+    // ---- 3. components：与 mapIdxPatch 一致 ----
+    components.resize(numFaces);
+    for (size_t fid = 0; fid < numFaces; ++fid) {
+        components[fid] = mapIdxPatch[fid];  // ★ 不用 NO_ID，直接用 patch ID
+    }
+
+    // ---- 4. seamVertices：从 rcSeamEdges 构建（已有正确的 patch ID）----
+    seamVertices.clear();
+    if (!rcSeamEdges.empty()) {
+        // 按顶点收集相邻 patch（通过网格顶点 → face → patch）
+        std::vector<std::vector<uint32_t>> vertexPatches(scene.mesh.vertices.size());
+        for (size_t pid = 0; pid < NP; ++pid) {
+            for (FIndex fid : rcPatches[pid].faces) {
+                if (fid >= scene.mesh.faces.size()) continue;
+                const Mesh::Face& face = scene.mesh.faces[fid];
+                for (int v = 0; v < 3; ++v) {
+                    vertexPatches[face[v]].push_back((uint32_t)pid);
+                }
+            }
+        }
+        // 去重
+        for (auto& vp : vertexPatches) {
+            std::sort(vp.begin(), vp.end());
+            vp.erase(std::unique(vp.begin(), vp.end()), vp.end());
+        }
+
+        for (size_t vid = 0; vid < vertexPatches.size(); ++vid) {
+            if (vertexPatches[vid].size() < 2) continue;
+
+            SeamVertex sv;
+            sv.idxVertex = (VIndex)vid;
+
+            for (uint32_t pid : vertexPatches[vid]) {
+                if (pid >= texturePatches.size()) continue;
+                const TexturePatch& tp = texturePatches[pid];
+                if (tp.faces.empty()) continue;
+
+                // 找该顶点在 patch 中某个 face 上的 UV
+                TexCoord uv(0, 0);
+                bool found = false;
+                for (FIndex fid : tp.faces) {
+                    if (fid >= scene.mesh.faces.size()) continue;
+                    const Mesh::Face& face = scene.mesh.faces[fid];
+                    for (int v = 0; v < 3; ++v) {
+                        if (face[v] == (VIndex)vid) {
+                            uv = scene.mesh.faceTexcoords[fid * 3 + v];
+                            found = true;
+                            break;
+                        }
+                    }
+                    if (found) break;
+                }
+                if (!found) continue;
+
+                // ★ 防御：检查 UV 有效性
+                if (!(uv.x >= 0 && uv.x <= 1 && uv.y >= 0 && uv.y <= 1)) {
+                    DEBUG_EXTRA("Invalid UV at vid=%zu fid=%u: (%f, %f)", vid, 
+                                tp.faces[0], uv.x, uv.y);
+                    continue;
+                }
+
+                SeamVertex::Patch sp;
+                sp.idxPatch = pid;
+                sp.proj = Point2f(uv.x * (float)textureSize, uv.y * (float)textureSize);
+                sv.patches.Insert(sp);
+            }
+
+            if (sv.patches.size() >= 2)
+                seamVertices.push_back(sv);
+        }
+    }
+
+    DEBUG_EXTRA("BuildStandardSeamData: %zu patches, %zu seamVertices, %zu edges",
+                NP, seamVertices.size(), rcSeamEdges.size());
+}
 // ============================================================
 // 全局光度校正：估计每视图相对 gain (R/G/B 独立)
 // 用点云中被多张图共同可见的点做灰度加权最小二乘，
@@ -15849,7 +16341,7 @@ if (!g_avgColorsComputed) {
 
             // ========== 颜色一致性代价 ==========
             {
-                const float lambda = 2.35f;
+                const float lambda = 0.0f;
 				// ========== 收集邻居颜色（修复版：1-ring + faceToView）==========
                 std::vector<cv::Vec3f> neighborColors;
                 if (!scene.mesh.faceFaces.empty() && faceID < scene.mesh.faceFaces.size()) {
@@ -15990,7 +16482,7 @@ if (!g_avgColorsComputed) {
 
 				// ★ 简化：去掉颜色阻断，直接让评分说话
 				// 只要多数view的平均分不低于我太多（差 < 0.3），就切换
-				if (majorityAvgScore > currentScore - 0.3f) {
+				if (majorityAvgScore > currentScore - 0.5f) {
 					newFaceToView[fid] = majorityView;
 					newFaceScores[fid] = majorityAvgScore;
 				}
@@ -20358,8 +20850,8 @@ bool Scene::TextureMesh(unsigned nResolutionLevel, unsigned nMinResolution, unsi
 					fRatioDataSmoothness, nIgnoreMaskLabel, views))
 				return false;
 
-
 			texture.SmoothVirtualFaceViews(texture.faceViews, mesh.faceFaces, 6);
+
 			// ✅ 4. RC 风格光栅化（Affine + Homography 混合）
 			Mesh::Image8U3Arr textures;
 			if (!texture.RasterizeVirtualFaces(
@@ -20368,6 +20860,18 @@ bool Scene::TextureMesh(unsigned nResolutionLevel, unsigned nMinResolution, unsi
 					nTextureSizeMultiple, colEmpty, textures))
 				return false;
 
+			texture.MergeSameViewPatches();
+			DEBUG_EXTRA("=== After MergeSameViewPatches, calling BuildStandardSeamData ===");
+			// // ★★★ 新增：构建标准接缝数据 + 调用全局/局部接缝消除 ★★★
+			// texture.BuildStandardSeamDataFromRCPatches(
+			// 	virtualFaceMap, texture.faceViews, nTextureSizeMultiple);
+
+			// // 直接操作 atlas（不污染 images）
+			// texture.RunSeamLevelingOnAtlas(textures.back(), nTextureSizeMultiple);
+
+			texture.GlobalAlignPatches(textures.back(), nTextureSizeMultiple);
+			texture.LocalBlendSeams(textures.back(), nTextureSizeMultiple);
+
 			mesh.texturesDiffuse = std::move(textures);
 			DEBUG_EXTRA("Existing UV texturing completed: %u faces (%s)",
 						mesh.faces.size(), TD_TIMER_GET_FMT().c_str());