进一步优化

libs/MVS/SceneTexture.cpp

@@ -768,6 +768,10 @@ public:
     unsigned nTextureSizeMultiple,
     Pixel8U colEmpty,
     Mesh::Image8U3Arr& outTextures);
+	void FeatherTextureSeams(Image8U3& texture,
+                                const std::vector<IIndex>& texelPatchID,
+                                int textureSize,
+                                int featherRadius=3);
 	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！
@@ -827,8 +831,8 @@ public:
 	std::vector<uint32_t> m_texelPatchID; // 每个 texel 属于哪个 rcPatch（-1 表示无）
 	inline void SmoothVirtualFaceViews(
     std::vector<std::vector<IIndex>>& virtualFaceViews,
-		const Mesh::FaceFacesArr& faceFaces,  // ← 改成这个类型
+    const Mesh::FaceFacesArr& faceFaces,
-		int iterations = 2)
+    int iterations = 6)
 {
     for (int iter = 0; iter < iterations; ++iter) {
         auto newViews = virtualFaceViews;
@@ -837,25 +841,23 @@ public:
             IIndex myView = virtualFaceViews[i][0];
 
             std::map<IIndex, int> vote;
-				int validNeighbors = 0;
+            // 1-ring
-
-				// faceFaces[i] 是 TPoint3<FIndex>，用 .x .y .z 或 [0][1][2] 访问3个邻居
             const auto& ff = faceFaces[i];
             for (int k = 0; k < 3; ++k) {
-					FIndex nb = ff[k];  // ff.x / ff.y / ff.z 也行
+                FIndex nb = ff[k];
-					if (nb < (FIndex)virtualFaceViews.size() && !virtualFaceViews[nb].empty()) {
+                if (nb < (FIndex)virtualFaceViews.size() && !virtualFaceViews[nb].empty())
                     vote[virtualFaceViews[nb][0]]++;
-						validNeighbors++;
             }
-				}
+            if (vote.empty()) continue;
-				if (validNeighbors < 2) continue;
 
             auto best = std::max_element(vote.begin(), vote.end(),
                 [](const std::pair<IIndex, int>& a, const std::pair<IIndex, int>& b) {
                     return a.second < b.second;
                 });
 
-				if (best->first != myView && best->second >= 2) {
+            // ★ 条件：多数票 > 我的票 + 至少 2 票
+            int myVote = vote[myView];
+            if (best->first != myView && best->second > myVote && best->second >= 2) {
                 newViews[i][0] = best->first;
             }
         }
@@ -14605,9 +14607,48 @@ void MeshTexture::GlobalPatchColorAlignment(Image8U3& atlas, int textureSize)
     
     DEBUG_EXTRA("Global alignment done: %d constraints (%s)", rows, TD_TIMER_GET_FMT().c_str());
 }
-// ============================================================
+// 对每个 texel，如果它的 patchID 和邻居不同，说明是接缝
-// 3. RC 风格光栅化主函数（含接缝优化）
+// 在接缝处做 3x3 或 5x5 的高斯模糊/均值模糊
-// ============================================================
+void MeshTexture::FeatherTextureSeams(Image8U3& texture,
+                                const std::vector<IIndex>& texelPatchID,
+                                int textureSize,
+                                int featherRadius)
+{
+    if (texture.empty() || texelPatchID.empty()) return;
+
+    // 对整张图做高斯模糊
+    Image8U3 blurred;
+    cv::GaussianBlur(texture, blurred,
+                     cv::Size(2 * featherRadius + 1, 2 * featherRadius + 1), 0);
+
+    // 逐像素检查接缝
+    for (int y = 0; y < textureSize; ++y) {
+        for (int x = 0; x < textureSize; ++x) {
+            int idx = y * textureSize + x;
+            if (texelPatchID[idx] == NO_ID) continue;
+
+            IIndex myPatch = texelPatchID[idx];
+            bool isSeam = false;
+
+            // 检查 4 邻域
+            const int dx4[] = { -1, 1, 0, 0 };
+            const int dy4[] = { 0, 0, -1, 1 };
+            for (int d = 0; d < 4; ++d) {
+                int nx = x + dx4[d], ny = y + dy4[d];
+                if (nx < 0 || ny < 0 || nx >= textureSize || ny >= textureSize) continue;
+                IIndex nb = texelPatchID[ny * textureSize + nx];
+                if (nb != NO_ID && nb != myPatch) {
+                    isSeam = true;
+                    break;
+                }
+            }
+
+            if (isSeam) {
+                texture(y, x) = blurred(y, x);
+            }
+        }
+    }
+}
 // ============================================================
 // 3. RC 风格光栅化主函数（含接缝优化）
 // ============================================================
@@ -14813,6 +14854,8 @@ bool MeshTexture::RasterizeVirtualFaces(
         SeamBlendingFromOriginalImages(atlas);
         DEBUG_EXTRA("Seam blending completed: %zu edges (%s)", seamEdges.size(), TD_TIMER_GET_FMT().c_str());
     }
+
+	// FeatherTextureSeams(atlas, m_texelPatchID, textureSize, 3);
     return true;
 }
 
@@ -15753,30 +15796,30 @@ if (!g_avgColorsComputed) {
             // ========== 颜色一致性代价 ==========
             {
                 const float lambda = 20.35f;
-
+				// ========== 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()) {
                     const Mesh::Face& topoNeighbors = scene.mesh.faceFaces[faceID];
                     for (int k = 0; k < 3; ++k) {
                         FIndex nb = topoNeighbors[k];
                         if (nb == NO_ID || nb >= (FIndex)faceToView.size()) continue;
-						if (!scene.mesh.faceFaces.empty() && nb < scene.mesh.faceFaces.size()) {
-							const auto& nbrs = scene.mesh.faceFaces[nb];
-							for (int ni = 0; ni < 3; ++ni) {
-								unsigned int nbrFace = nbrs[ni];
-								if (nbrFace == 0xFFFFFFFF) continue;
-								if (nbrFace >= (unsigned int)faceNeighbors.size()) continue;
-								if (faceNeighbors[nbrFace].empty()) continue;
 
-								unsigned int nbrView = (unsigned int)faceNeighbors[nbrFace][0];
+                        IIndex nbView = faceToView[nb];
-								if (nbrView == 0xFFFFFFFF) continue;
+                        if (nbView == NO_ID) {
-								if (nbrView < (unsigned int)g_avgColors.size()) {
+                            // fallback: 邻居还没分配 view，用第一个可见相机
-									neighborColors.push_back(g_avgColors[nbrView]);
+                            if (nb < (FIndex)faceNeighbors.size() && !faceNeighbors[nb].empty()) {
-								}
+                                nbView = faceNeighbors[nb][0];
+                            }
+                        }
+                        if (nbView != NO_ID && nbView < (IIndex)g_avgColors.size()) {
+                            const cv::Vec3f& nc = g_avgColors[nbView];
+                            if (nc[0] >= 0) {  // 有效颜色才收集
+                                neighborColors.push_back(nc);
                             }
                         }
                     }
                 }
+                // ========== 修复结束 ==========
 
                 float colorDiff = 0.0f;
                 if (!neighborColors.empty()) {
@@ -15842,7 +15885,7 @@ if (!g_avgColorsComputed) {
 
     // ---------- 2. 改进的 Patch 一致性传播 ----------
 
-    const int PROPAGATION_ITER = 2;
+	const int PROPAGATION_ITER = 6;  // 从2改到6
 	for (int iter = 0; iter < PROPAGATION_ITER; ++iter) {
 		std::vector<IIndex> newFaceToView = faceToView;
 		std::vector<float> newFaceScores = faceScores;
@@ -15854,7 +15897,8 @@ if (!g_avgColorsComputed) {
 			const Mesh::Face& neighbors = scene.mesh.faceFaces[fid];
 			float currentScore = faceScores[fid];
 
-            if (currentScore > 0.8f) continue; // 锁死高质量面
+			// ★ 放宽：只锁死 > 0.95 的极高分明面，其余都允许被传播覆盖
+			if (currentScore > 0.95f) continue;
 
 			std::unordered_map<IIndex, int> vote;
 			vote[faceToView[fid]] = 1;
@@ -15875,8 +15919,9 @@ if (!g_avgColorsComputed) {
 				}
 			}
 
-            if (maxVote >= 3 && majorityView != faceToView[fid]) {
+			// ★ 放宽：只要多数票 >= 2 且和我不一样，就考虑切换（原来是 >= 3）
-                // 多数视图在邻居中的平均评分
+			if (maxVote >= 2 && majorityView != faceToView[fid]) {
+				// 计算多数view在邻居中的平均评分
 				float majorityAvgScore = 0.0f;
 				int count = 0;
 				for (int k = 0; k < 3; ++k) {
@@ -15889,76 +15934,9 @@ if (!g_avgColorsComputed) {
 				}
 				if (count > 0) majorityAvgScore /= count;
 
-                // ========== 颜色一致性检查（安全闸，优先于评分）==========
+				// ★ 简化：去掉颜色阻断，直接让评分说话
-                bool colorBlocked = false;
+				// 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) {
-                    cv::Vec3f majorityColor(0, 0, 0);
-                    int colorCount = 0;
-                    for (int k = 0; k < 3; ++k) {
-                        FIndex nb = neighbors[k];
-                        if (nb == NO_ID || nb >= (FIndex)faceToView.size()) continue;
-                        if (faceToView[nb] == majorityView) {
-                            Point3f nbCenter = (scene.mesh.vertices[scene.mesh.faces[nb][0]] +
-                                                scene.mesh.vertices[scene.mesh.faces[nb][1]] +
-                                                scene.mesh.vertices[scene.mesh.faces[nb][2]]) / 3.0f;
-                            // cv::Vec3f col = SampleColorAtPoint(
-							// 	images[majorityView].image,
-							// 	images[majorityView].camera,
-							// 	nbCenter
-							// );
-							cv::Vec3f col = g_avgColors[majorityView];
-
-                            if (col[0] >= 0) {
-                                majorityColor += col;
-                                colorCount++;
-                            }
-                        }
-                    }
-
-                    if (colorCount > 0) {
-                        majorityColor /= (float)colorCount;
-                        Point3f curCenter = (scene.mesh.vertices[scene.mesh.faces[fid][0]] +
-                                            scene.mesh.vertices[scene.mesh.faces[fid][1]] +
-                                            scene.mesh.vertices[scene.mesh.faces[fid][2]]) / 3.0f;
-                        // cv::Vec3f curColor = SampleColorAtPoint(
-						// 	images[faceToView[fid]].image,
-						// 	images[faceToView[fid]].camera,
-						// 	curCenter
-						// );
-						cv::Vec3f curColor = g_avgColors[faceToView[fid]];
-                        if (curColor[0] >= 0) {
-                            cv::Vec3f d = curColor - majorityColor;
-                            float colorDiff = std::sqrt(d[0]*d[0] + d[1]*d[1] + d[2]*d[2]) / 1.732f;
-
-                            if (fid % 50000 == 0) {
-                                VERBOSE("[Propagate] face=%d majorityView=%d curView=%d colorDiff=%.3f",
-                                        fid, majorityView, faceToView[fid], colorDiff);
-                            }
-
-                            if (colorDiff > 0.4f) {
-                                colorBlocked = true; // ✅ 阻断传播
-                            }
-                        }
-                    }
-                }
-                // ========== 颜色检查结束 ==========
-
-                // ✅ 只有颜色没被阻断时才考虑评分条件
-                bool shouldPropagate = false;
-                if (!colorBlocked) {
-                    if (currentScore < 0.3f) {
-                        shouldPropagate = (majorityAvgScore > currentScore - 0.2f);
-                    } else if (currentScore < 0.6f) {
-                        shouldPropagate = (majorityAvgScore > currentScore - 0.1f);
-                    } else {
-                        shouldPropagate = (majorityAvgScore > currentScore + 0.05f);
-                    }
-                    if (currentScore > 0.6f && std::abs(majorityAvgScore - currentScore) < 0.1f) {
-                        shouldPropagate = false;
-                    }
-                }
-
-                if (shouldPropagate) {
 					newFaceToView[fid] = majorityView;
 					newFaceScores[fid] = majorityAvgScore;
 				}
@@ -15982,6 +15960,28 @@ if (!g_avgColorsComputed) {
         }
     }
 
+	// 在写回循环之后，加这个：
+	for (int iter = 0; iter < 3; ++iter) {
+		auto newFaceToView = faceToView;
+		for (size_t i = 0; i < faceToView.size(); ++i) {
+			if (faceToView[i] == NO_ID) continue;
+			std::map<IIndex, int> vote;
+			const auto& ff = scene.mesh.faceFaces[i];
+			for (int k = 0; k < 3; ++k) {
+				FIndex nb = ff[k];
+				if (nb < (FIndex)faceToView.size() && faceToView[nb] != NO_ID)
+					vote[faceToView[nb]]++;
+			}
+			if (vote.size() <= 1) continue;
+			auto best = std::max_element(vote.begin(), vote.end(),
+				[](const std::pair<IIndex, int>& a, const std::pair<IIndex, int>& b) {
+					return a.second < b.second; });
+			if (best->first != faceToView[i] && best->second >= 2)
+				newFaceToView[i] = best->first;
+		}
+		faceToView.swap(newFaceToView);
+	}
+
     DEBUG_EXTRA("====== Virtual Face View Selection Summary ======");
     DEBUG_EXTRA("Total virtual faces      : %zu", virtualFaceMap.size());
     DEBUG_EXTRA("Successfully assigned    : %zu", successVF);
@@ -20305,7 +20305,7 @@ bool Scene::TextureMesh(unsigned nResolutionLevel, unsigned nMinResolution, unsi
 				return false;
 
 
-			texture.SmoothVirtualFaceViews(texture.faceViews, mesh.faceFaces, 2);
+			texture.SmoothVirtualFaceViews(texture.faceViews, mesh.faceFaces, 6);
 			// ✅ 4. RC 风格光栅化（Affine + Homography 混合）
 			Mesh::Image8U3Arr textures;
 			if (!texture.RasterizeVirtualFaces(