https://studio.mangoeffect.net/tags/node-guide/Recent content in Node-Guide on task_graph · GraphStudio — C++20 跨平台 DAG 任务执行框架https://studio.mangoeffect.net/img/og-image-wide.pnghttps://studio.mangoeffect.net/img/og-image-wide.pngHugozh-CNMon, 21 Sep 2026 22:05:21 +0800https://studio.mangoeffect.net/blog/blend/Tue, 14 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/blend/Photoshop 27 种图层混合模式的双输入合成：GPU 优先执行、CPU 镜像兜底。https://studio.mangoeffect.net/blog/face_detect/Tue, 14 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/face_detect/人脸框检测（可开 478 点关键点）：MediaPipe / MNN 双后端，auto 自动降级。https://studio.mangoeffect.net/blog/matting/Tue, 14 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/matting/人像 alpha 抠像：三输出（alpha 结果 / 灰度掩膜 / 透明切图），MediaPipe / MNN 双后端。https://studio.mangoeffect.net/blog/gpu_alpha_composite/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/gpu_alpha_composite/GPU 上的 alpha 通道合成（over 操作），前景 in 压到背景 in2 上。https://studio.mangoeffect.net/blog/gpu_blend/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/gpu_blend/GPU 上的两路输入线性混合（opacity 插值）。https://studio.mangoeffect.net/blog/gpu_box_blur/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/gpu_box_blur/GPU compute 管线的方框均值模糊，与 opencv_blur_filter 语义对齐。https://studio.mangoeffect.net/blog/gpu_brightness_contrast/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/gpu_brightness_contrast/GPU 上的线性亮度/对比度调整。https://studio.mangoeffect.net/blog/gpu_crop/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/gpu_crop/GPU 上的矩形裁剪（x/y/宽高）。https://studio.mangoeffect.net/blog/gpu_flip/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/gpu_flip/GPU 上的图像翻转（水平/垂直/双向）。https://studio.mangoeffect.net/blog/gpu_gamma/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/gpu_gamma/GPU 上的幂律伽马校正。https://studio.mangoeffect.net/blog/gpu_gaussian_blur/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/gpu_gaussian_blur/GPU compute 高斯模糊，kernel 为 WGSL/MSL/GLSL 单源内置。https://studio.mangoeffect.net/blog/gpu_grayscale/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/gpu_grayscale/GPU 上的 RGB→灰度（BGR2GRAY 定点系数），无参数。https://studio.mangoeffect.net/blog/gpu_invert/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/gpu_invert/GPU 像素取反，无参数。https://studio.mangoeffect.net/blog/gpu_laplacian/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/gpu_laplacian/GPU 上的拉普拉斯二阶导数，无参数。https://studio.mangoeffect.net/blog/gpu_resize/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/gpu_resize/GPU 上的双线性缩放。https://studio.mangoeffect.net/blog/gpu_rgb2hsv/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/gpu_rgb2hsv/GPU 上的 RGB→HSV 色彩空间转换，无参数。https://studio.mangoeffect.net/blog/gpu_rotate90/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/gpu_rotate90/GPU 上的 90° 整倍数旋转。https://studio.mangoeffect.net/blog/gpu_sharpen/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/gpu_sharpen/GPU 上的反锐化掩模锐化。https://studio.mangoeffect.net/blog/gpu_sobel/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/gpu_sobel/GPU 上的 Sobel 梯度（幅度图输出）。https://studio.mangoeffect.net/blog/gpu_threshold/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/gpu_threshold/GPU 上的固定阈值二值化。https://studio.mangoeffect.net/blog/render_box_dir/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_box_dir/参数化方向方框模糊（水平/垂直 pass）。https://studio.mangoeffect.net/blog/render_dilate_dir/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_dilate_dir/GPU 分离形态学膨胀（max），iterations 重复 pass 表达多次腐蚀膨胀。https://studio.mangoeffect.net/blog/render_erode_dir/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_erode_dir/GPU 分离形态学腐蚀（min）。https://studio.mangoeffect.net/blog/render_gauss_dir/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_gauss_dir/参数化方向高斯：ksize ≤ 99、sigma = 0 时按 OpenCV 公式自动推算，方向可选。https://studio.mangoeffect.net/blog/render_gauss_h/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_gauss_h/内置 5-tap [1,4,6,4,1]/16 可分离高斯的水平 pass。https://studio.mangoeffect.net/blog/render_gauss_v/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_gauss_v/内置 5-tap [1,4,6,4,1]/16 可分离高斯的垂直 pass。https://studio.mangoeffect.net/blog/render_gradient/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_gradient/无输入生成线性渐变图：测试/背景/合成底图。https://studio.mangoeffect.net/blog/render_laplacian/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_laplacian/GPU render 侧拉普拉斯（ksize 1-7）。https://studio.mangoeffect.net/blog/render_lut/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_lut/双输入 LUT 应用：in = 图像、in2 = LUT 图，HALD 与 stripe 布局自动识别。https://studio.mangoeffect.net/blog/render_lut_cube/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_lut_cube/读取 .cube 3D LUT 文件，CPU 转换为 HALD LUT 图输出（接 render_lut 的 in2）。https://studio.mangoeffect.net/blog/render_mix/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_mix/双输入 GPU 混合（factor 插值）。https://studio.mangoeffect.net/blog/render_pass/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_pass/单 pass 离屏渲染的基础积木：一个脚本 + 一次全屏三角形绘制。https://studio.mangoeffect.net/blog/render_passthrough/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_passthrough/输入原样输出：走一遍 GPU 上传/下载路径的对照节点。https://studio.mangoeffect.net/blog/render_pipeline/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_pipeline/任务级多 pass 编排：passes 数量 + pass{i}_* 扁平参数键表达整条滤镜链。https://studio.mangoeffect.net/blog/render_scharr/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_scharr/GPU render 侧 Scharr 导数（平滑核 [3,10,3] 标定）。https://studio.mangoeffect.net/blog/render_sobel/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_sobel/GPU render 侧 Sobel（ksize 1-7），核系数 CPU 算好后 uniform 下发。https://studio.mangoeffect.net/blog/render_subtract/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_subtract/in - in2 的饱和减法：形态学梯度/差分画面的积木。https://studio.mangoeffect.net/blog/render_threshold/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_threshold/GPU render 侧的亮度阈值二值化。https://studio.mangoeffect.net/blog/render_unsharp/Mon, 13 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/render_unsharp/反锐化掩模：in = 原图、in2 = 模糊图，amount 控制强度。https://studio.mangoeffect.net/blog/opencv_add_weighted/Sun, 12 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_add_weighted/两路输入按 alpha/beta/gamma 线性混合：叠图、淡入淡出一节点搞定。https://studio.mangoeffect.net/blog/opencv_brightness_contrast/Sun, 12 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_brightness_contrast/按 gain / bias 线性调整亮度与对比度。https://studio.mangoeffect.net/blog/opencv_clahe/Sun, 12 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_clahe/分块自适应直方图均衡：局部增强且噪声放大可控（clip limit + 网格）。https://studio.mangoeffect.net/blog/opencv_connected_components/Sun, 12 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_connected_components/二值图连通域逐个编号，输出标签图（计数见日志）。https://studio.mangoeffect.net/blog/opencv_denoise/Sun, 12 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_denoise/fastNlMeansDenoising：按图像块相似度去噪，细节保留最好。https://studio.mangoeffect.net/blog/opencv_distance_transform/Sun, 12 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_distance_transform/前景像素到最近背景的距离场：骨架化/宽度估计的中间量。https://studio.mangoeffect.net/blog/opencv_equalize_hist/Sun, 12 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_equalize_hist/全局直方图均衡化：拉开动态范围，灰图立刻通透。https://studio.mangoeffect.net/blog/opencv_flood_fill/Sun, 12 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_flood_fill/从种子点按相似度泛洪：选区填充 / 魔棒效果。https://studio.mangoeffect.net/blog/opencv_gamma_correct/Sun, 12 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_gamma_correct/按幂律（out = in^gamma）调整明暗，显示器匹配与提亮暗部。https://studio.mangoeffect.net/blog/opencv_grabcut/Sun, 12 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_grabcut/以矩形或掩膜初始化的迭代图割分割：交互式抠图的经典算法。https://studio.mangoeffect.net/blog/opencv_invert/Sun, 12 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_invert/像素取反（255 - x），负片效果 / 掩膜取反。https://studio.mangoeffect.net/blog/opencv_sharpen/Sun, 12 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_sharpen/经典反锐化掩模锐化（unsharp mask 一站式封装）。https://studio.mangoeffect.net/blog/opencv_watershed/Sun, 12 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_watershed/经典分水岭：配合标记图（marker）分割粘连目标。https://studio.mangoeffect.net/blog/video_reader/Sun, 12 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/video_reader/逐帧读取视频文件（mp4 / mov / avi …），每次执行输出一帧。https://studio.mangoeffect.net/blog/video_writer/Sun, 12 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/video_writer/把帧序列编码写出为视频文件（fourcc / fps / 是否彩色可配）。https://studio.mangoeffect.net/blog/color_grade_bcs/Sat, 11 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/color_grade_bcs/一次节点同时调亮度、对比度、饱和度。https://studio.mangoeffect.net/blog/color_grade_curves/Sat, 11 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/color_grade_curves/主曲线与 R/G/B 通道曲线：控制点字符串描述的样条调色。https://studio.mangoeffect.net/blog/color_grade_hsl/Sat, 11 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/color_grade_hsl/按色相分区（红/黄/绿/青/蓝/洋红 + 明度/饱和度）精细调色。https://studio.mangoeffect.net/blog/color_grade_lut/Sat, 11 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/color_grade_lut/应用 .cube 等 3D LUT 文件做调色（三线性 / 四面体插值）。https://studio.mangoeffect.net/blog/color_grade_mixer/Sat, 11 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/color_grade_mixer/RGB 输出通道按输入通道加权重组，做色调分离/通道对调。https://studio.mangoeffect.net/blog/color_grade_wheels/Sat, 11 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/color_grade_wheels/Lift / Gamma / Gain 三色轮：阴影、中间调、高光分别做 RGB 偏移与整体明度调整。https://studio.mangoeffect.net/blog/opencv_adaptive_threshold/Sat, 11 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_adaptive_threshold/按邻域局部统计（均值/高斯）二值化，抗光照不均。https://studio.mangoeffect.net/blog/opencv_apply_color_map/Sat, 11 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_apply_color_map/把单通道图按预置色表上色（JET / VIRIDIS / BONE …），热力图可视化一步到位。https://studio.mangoeffect.net/blog/opencv_cvt_color/Sat, 11 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_cvt_color/BGR/GRAY/RGB/HSV/HLS/LAB/LUV/YCrCb/XYZ 之间的常用转换。https://studio.mangoeffect.net/blog/opencv_flip/Sat, 11 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_flip/水平 / 垂直 / 双向翻转（flip code 0 / 1 / -1）。https://studio.mangoeffect.net/blog/opencv_resize/Sat, 11 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_resize/按目标宽高与插值方法缩放图像。https://studio.mangoeffect.net/blog/opencv_rotate/Sat, 11 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_rotate/90° / 180° / 270° 快速旋转（rotate code 0/1/2）。https://studio.mangoeffect.net/blog/opencv_threshold/Sat, 11 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_threshold/按阈值二值化/截断/归零，含 OTSU 与 TRIANGLE 自动阈值。https://studio.mangoeffect.net/blog/opencv_transpose/Sat, 11 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_transpose/行列互换（沿主对角线翻转）。https://studio.mangoeffect.net/blog/opencv_warp_affine/Sat, 11 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_warp_affine/按 2×3 仿射矩阵做平移/旋转/缩放/错切，任意角度旋转走这里。https://studio.mangoeffect.net/blog/io_input/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/io_input/SDK 嵌入式执行的图边界：宿主在执行入口把绑定值写入 io_input，图内任务从其 out 端口消费。https://studio.mangoeffect.net/blog/io_output/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/io_output/SDK 嵌入式执行的图边界：执行结束后宿主从 io_output 收集图计算结果。https://studio.mangoeffect.net/blog/opencv_bilateral_filter/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_bilateral_filter/保边去噪：同时按空间距离与色彩差异加权，磨皮/去噪的同时保留轮廓。https://studio.mangoeffect.net/blog/opencv_blur_filter/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_blur_filter/方框均值模糊：核窗口内像素取平均，最快的平滑手段。https://studio.mangoeffect.net/blog/opencv_box_filter/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_box_filter/方框滤波：核内求和（可归一化为均值），是均值模糊的通用形式。https://studio.mangoeffect.net/blog/opencv_dilate/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_dilate/形态学膨胀：核内取最大值，亮区扩张、连接断裂。https://studio.mangoeffect.net/blog/opencv_erode/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_erode/形态学腐蚀：核内取最小值，亮区收缩、去白点噪声。https://studio.mangoeffect.net/blog/opencv_filter_2d/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_filter_2d/用任意自定义核做 2D 卷积/相关：把你的核写成数值矩阵即可。https://studio.mangoeffect.net/blog/opencv_gabor_filter/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_gabor_filter/Gabor 核方向纹理滤波：指纹/织物纹理与方向性特征提取的经典手段。https://studio.mangoeffect.net/blog/opencv_gaussian_blur_filter/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_gaussian_blur_filter/高斯加权模糊：核内按正态分布加权平均，平滑更自然，是去噪/背景虚化的默认选择。https://studio.mangoeffect.net/blog/opencv_image_read/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_image_read/从磁盘读取一张图像（png / jpg / bmp / tiff / webp 等 OpenCV 支持的格式），作为图的输入源。https://studio.mangoeffect.net/blog/opencv_image_write/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_image_write/把上游图像写出为文件，格式由扩展名推断（.png / .jpg / .bmp …）。https://studio.mangoeffect.net/blog/opencv_laplacian_filter/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_laplacian_filter/二阶导数算子：各向同性的边缘/纹理响应，锐化与边缘检测两用。https://studio.mangoeffect.net/blog/opencv_median_blur_filter/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_median_blur_filter/中值滤波：核内取中位数，对椒盐噪声极其有效且保边。https://studio.mangoeffect.net/blog/opencv_morphology_ex/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_morphology_ex/开/闭/梯度/顶帽/黑帽等形态学组合：一次节点完成膨胀腐蚀的组合拳。https://studio.mangoeffect.net/blog/opencv_pyr_down/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_pyr_down/高斯平滑 + 尺寸减半：抗锯齿的下采样。https://studio.mangoeffect.net/blog/opencv_pyr_up/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_pyr_up/插值放大一倍 + 高斯模糊：金字塔逆操作。https://studio.mangoeffect.net/blog/opencv_scharr_filter/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_scharr_filter/Scharr 算子：3× 核下比 Sobel 更精确的旋转对称导数，小核边缘检测首选。https://studio.mangoeffect.net/blog/opencv_sep_filter_2d/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_sep_filter_2d/两个一维核先后卷积（先横后纵），大核时的提速版 filter2d。https://studio.mangoeffect.net/blog/opencv_sobel_filter/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_sobel_filter/Sobel 算子求图像梯度（dx / dy 阶数可选），边缘检测的基本积木。https://studio.mangoeffect.net/blog/opencv_sqr_box_filter/Fri, 10 Jul 2026 10:00:00 +0800https://studio.mangoeffect.net/blog/opencv_sqr_box_filter/核内像素平方的均值（归一化），局部能量/方差估计的积木。