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",[1098,1148,1151],{"href":1149,"rel":1150},"https:\u002F\u002Fwww.rust-lang.org\u002Fzh-CN\u002Ftools\u002Finstall",[1102],"rust",[1144,1153,1154,1155,1162],{},"打开命令行，运行：",[1156,1157,1158],"strong",{},[1159,1160,1161],"code",{},"cargo install quadim -F build-bin","，听着散热器的嗡嗡声，几分钟就好了。",[1138,1164,1165],{"id":1165},"使用前的准备",[1167,1168,1170],"h3",{"id":1169},"_1建议建立用于存放中间过程的图片的文件夹","1.建议建立用于存放中间过程的图片的文件夹",[1172,1173,1178],"pre",{"className":1174,"code":1176,"language":1177},[1175],"language-text","mkdir frames #用于存放拆帧后的图片\nmkdir output #用于存放quadim处理后的图片\n","text",[1159,1179,1176],{"__ignoreMap":1106},[1167,1181,1183,1184,1187],{"id":1182},"_2如果你要对视频进行处理请先用ffmpeg对视频进行拆帧处理","2.如果你要对视频进行处理，请先用",[1159,1185,1186],{},"FFmpeg","对视频进行拆帧处理",[1172,1189,1192],{"className":1190,"code":1191,"language":1177},[1175],"ffmpeg -i .\\\u003C输入文件(请自行修改)>.mp4 -q 2 .\\frames\\%05d.jpg\n",[1159,1193,1191],{"__ignoreMap":1106},[1167,1195,1197,1198,1201],{"id":1196},"_3举例假如我对frames文件夹进行了处理","3.(举例)假如我对",[1159,1199,1200],{},"frames","文件夹进行了处理",[1172,1203,1206],{"className":1204,"code":1205,"language":1177},[1175],"# 相关参数设置请勿照抄, 请参考下面的参数的用法和意义\nquadim .\\frames\\ -o .\\output --ratio 13:6 --depth 10 --stroke-width 1 --fps 24 --buffer 4492800\n# 相关参数设置请勿照抄, 请参考下面的参数的用法和意义\n",[1159,1207,1205],{"__ignoreMap":1106},[1167,1209,1211,1212,1214],{"id":1210},"_4最后用ffmpeg合并处理后的图片请保留原始输入视频文件","4.最后用",[1159,1213,1186],{},"合并处理后的图片(请保留原始输入视频文件)",[1172,1216,1219],{"className":1217,"code":1218,"language":1177},[1175],"ffmpeg -framerate \u003C帧数与原文件相同> -i .\\output\\%04d.png -i .\\\u003C输入文件(请自行修改)>.mp4 -map 0:v:0 -map 1:a:0 -c:v h264 -c:a copy -crf 20 .\\output.mp4\n",[1159,1220,1218],{"__ignoreMap":1106},[1138,1222,1223],{"id":1223},"参数的用法和意义",[1172,1225,1228],{"className":1226,"code":1227,"language":1177},[1175],"使用方法: quadim.exe [参数] \u003C输入文件路径>\n\n输入文件路径:\n  \u003C单个图片或目录>  某个图片文件, 或者某个文件夹里的所有图片文件\n\n参数:\n  -o, --output \u003C输出路径>             没填这个选项就会自动创建基于时间命名的输出文件夹，有填就是你指定的文件名或目录\n  -r, --ratio \u003C分割比例>              指定按什么比例将图像切分成子块 [默认值: 1:1] (建议填输入源的分辨率比例, 如16:9等)\n  -d, --depth \u003C分割深度>              四叉树的最大深度 [默认值: 8]\n  -Y, --thres-ay \u003C处理阈值>           对 Alpha 和 Luma 通道的阈值处理 [默认值: 20]\n  -C, --thres-cbcr \u003C处理阈值>         对 Cb 和 Cr 通道进行阈值处理, 注意, 测试按顺序进行 [默认值: 2]\n      --merge \u003C合并算法>              合并测试算法 [默认值: st-dev] [可选值: range, st-dev]\n  -s, --shape \u003C节点形状>              四叉树上每个节点的形状 [默认值: rect] [可选值: rect, circle, cross, yr-add, yr-mul]\n  -B, --bg-color \u003C背景颜色>           填充的背景颜色(如果需要) [默认值: 白色]\n  -S, --stroke-color \u003C分割线颜色>     分割线的颜色 [默认值: 黑色]\n  -W, --stroke-width \u003C分割线粗细>     分割线粗细 [默认值: 0]\n      --fps \u003C变化速率>                笔刷的变化速率 [默认值: 30] (建议填写输入源的帧率)\n  -P, --parallel \u003C线程数量>           要使用的线程数, 默认为 CPU 线程数 (可以不用填)\n      --buffer \u003C缓冲大小>             缓冲区大小, 如输入源分辨率为 1920x1080, 则应填数值为 1920x1080=2073600, 以此类推 (建议填写)\n      --errors \u003C最大错误数>           最大错误数, 当出现错误次数达到最大错误数时, 程序会自动结束 [默认值: 5]\n  -h, --help                         显示帮助信息 (使用'--help'选项能查看更多)\n  -V, --version                      显示当前版本号\n",[1159,1229,1227],{"__ignoreMap":1106},[1138,1231,1232],{"id":1232},"展示",[1172,1234,1237],{"className":1235,"code":1236,"language":1177},[1175],"quadim E:\\TESTRANGE\\pic\\121\\out --ratio 20:18 --stroke-width 1\n",[1159,1238,1236],{"__ignoreMap":1106},[1172,1240,1243],{"className":1241,"code":1242,"language":1177},[1175],"quadim E:\\TESTRANGE\\pic\\121\\out --ratio 24:25 --depth 6 --shape circle --bg-color transparent\n",[1159,1244,1242],{"__ignoreMap":1106},[1095,1246,1247],{},"原图",[1095,1249,1250,1251,1254,1255],{},"都已经包装好了。不过需要注意的是，",[1156,1252,1253],{},"目前并不提供稳定性保证","。",[1256,1257,1258],"em",{},"（因为我不知道该怎么保证 (○｀ 3′○)）",[1095,1260,1261,1265,1266,1269,1270,1273],{},[1098,1262,1264],{"href":1122,"rel":1263},[1102],"文档","……凑合着看看吧。注意",[1159,1267,1268],{},"analyze()","和",[1159,1271,1272],{},"render()","这俩函数，它们即是一切。",[1138,1275,1276],{"id":1276},"特性列表",[1278,1279,1280,1283,1286,1289,1308],"ul",{},[1144,1281,1282],{},"多线程！迄今为止最快的实现。",[1144,1284,1285],{},"以 RGBA-8 格式处理图像。",[1144,1287,1288],{},"合并测试在 YCbCr 而非 RGB 空间。",[1144,1290,1291,1292,1295,1296,1299,1300,1303,1304,1307],{},"由于没有抗锯齿，因此在提供",[1159,1293,1294],{},"--shape rect --border-width N","，",[1159,1297,1298],{},"(N > 0)","渲染参数时，实际上只会绘制左侧和上侧的边框。在指定较大的",[1159,1301,1302],{},"border_width","以及突兀的",[1159,1305,1306],{},"border_color","时会更加明显。",[1144,1309,1310,1311,1314,1315,1318,1319],{},"对于颜色参数：你可以传入",[1159,1312,1313],{},"DarkSlateGray","、",[1159,1316,1317],{},"hsla(168, 100%, 50%, 1)","，等等所有CSS里能写的颜色。",[1256,1320,1321,1322,1327],{},"（感谢 ",[1098,1323,1326],{"href":1324,"rel":1325},"https:\u002F\u002Fgithub.com\u002Fmazznoer\u002Fcsscolorparser-rs",[1102],"csscolorparser","）",[1138,1329,1330],{"id":1330},"画饼",[1278,1332,1333,1336,1339],{},[1144,1334,1335],{},"🔥 允许自定义笔刷，比如随时间旋转的十字、随音乐律动的光点、在HSL颜色空间过滤特定颜色！等等。",[1144,1337,1338],{},"更友好的CLI：允许一次传入多张图片，以及自动探测最合适的切片比例。",[1144,1340,1341],{},"把分析和渲染完全分离，允许直接存取四叉树二进制格式……",[1138,1343,1345],{"id":1344},"quadim-的原理","Quadim 的原理？",[1141,1347,1348,1369,1446],{"start":514},[1144,1349,1350,1351,1356,1357,1362,1363,1368],{},"使用 ",[1098,1352,1355],{"href":1353,"rel":1354},"https:\u002F\u002Fgithub.com\u002Fclap-rs\u002Fclap",[1102],"clap"," 解析命令行输入；使用 ",[1098,1358,1361],{"href":1359,"rel":1360},"https:github.com\u002Feternal-io\u002Fsrc-dst-clarifier",[1102],"src-dst-clarifier"," 来处理源到目标文件的映射；使用 ",[1098,1364,1367],{"href":1365,"rel":1366},"https:\u002F\u002Fgithub.com\u002Frust-threadpool\u002Frust-threadpool",[1102],"threadpool"," 进行并行处理。",[1144,1370,1371,1372],{},"Analyze 阶段",[1141,1373,1374,1384,1391,1427,1443],{},[1144,1375,1376,1377,1380,1381,1254],{},"根据",[1159,1378,1379],{},"GenericParams::slicing_ratio","将图像划分成一个个子块。通常需要选择正确的比例来让子块保持正方形，比如",[1159,1382,1383],{},"-r 16:9",[1144,1385,1386,1387,1390],{},"对每个子块，根据",[1159,1388,1389],{},"GenericParams::max_depth","深度优先地遍历四叉树。（存在一行代码限制了真正的最大深度，以保证子图像的边长始终大于零像素）",[1144,1392,1393,1394,1397,1398],{},"尝试合并所有子块。",[1395,1396],"br",{},"能合并的情况有两种：",[1141,1399,1400,1403,1421,1424],{},[1144,1401,1402],{},"抵达了最大深度，则这块区域的所有像素始终被合并，计算平均值并缓存。",[1144,1404,1405,1406,1409,1410,1413,1414,1417,1418,1420],{},"检查自身的四个子块",[1156,1407,1408],{},"左上角","的四个像素，计算它们的标准差或是极差（根据",[1159,1411,1412],{},"AnalyzeParams::merge_method","）并与",[1159,1415,1416],{},"AnalyzeParams::thres_","进行比较，若认为波动程度小则允许合并。然后再计算平均值并缓存。",[1395,1419],{},"不能合并的情况有两种：",[1144,1422,1423],{},"情况二的反相。",[1144,1425,1426],{},"子块的子块的子块……不能合并。",[1144,1428,1429,1430,1433,1434,1436,1437,1439,1440,1442],{},"额外的数据结构",[1159,1431,1432],{},"[CanvasPixel]","缓存“颜色平均值”和“该不该合并”。",[1395,1435],{},"（像素颜色平均值储存在相当于子块",[1156,1438,1408],{},"的位置，通过右移可以很容易地寻址。",[1159,1441,1432],{},"本身是一维的，但被抽象成与图像相同的大小，这就是为什么图像的像素数不能大于缓存的长度。）",[1144,1444,1445],{},"遍历完成后，四叉树信息已经被完整记录在缓存中了。由于没有任何数据被重复计算，因此 Quadim 十分高效。",[1144,1447,1448,1449,1451,1452,1455,1456,1458],{},"Render 阶段",[1395,1450],{},"这回是广度优先遍历四叉树了。简单来说就是把“颜色”从四叉树中取出并用“画笔”（trait ",[1159,1453,1454],{},"Brush","）画到原图上。",[1395,1457],{},"由于新图的大小保证与原图相同，因此可以在原始图像缓冲区上就地操作，不需要额外的内存分配，这是 Quadim 保持高效的另一个要素。",[1138,1460,1461],{"id":1461},"已知问题",[1278,1463,1464],{},[1144,1465,1466,1467,1327],{},"在绘制较大的圆\u002F椭圆时，它会被裁掉一部分。（详见 ",[1098,1468,1471],{"href":1469,"rel":1470},"https:\u002F\u002Fgithub.com\u002Fimage-rs\u002Fimageproc\u002Fissues\u002F519",[1102],"image-rs\u002Fimageproc#519",[1138,1473,1475,1476,1479],{"id":1474},"附录exit-code含义","附录：",[1159,1477,1478],{},"exit code","含义",[1141,1481,1482,1485,1488,1491],{"start":514},[1144,1483,1484],{},"成功",[1144,1486,1487],{},"部分错误",[1144,1489,1490],{},"错误过多，提前终止",[1144,1492,1493],{},"致命错误，在处理任何图像前就已经退出；一般是传错参数了",{"title":1106,"searchDepth":1495,"depth":1495,"links":1496},4,[1497,1499,1509,1510,1511,1512,1513,1514,1515],{"id":255,"depth":1498,"text":255},2,{"id":1165,"depth":1498,"text":1165,"children":1500},[1501,1503,1505,1507],{"id":1169,"depth":1502,"text":1170},3,{"id":1182,"depth":1502,"text":1504},"2.如果你要对视频进行处理，请先用FFmpeg对视频进行拆帧处理",{"id":1196,"depth":1502,"text":1506},"3.(举例)假如我对frames文件夹进行了处理",{"id":1210,"depth":1502,"text":1508},"4.最后用FFmpeg合并处理后的图片(请保留原始输入视频文件)",{"id":1223,"depth":1498,"text":1223},{"id":1232,"depth":1498,"text":1232},{"id":1276,"depth":1498,"text":1276},{"id":1330,"depth":1498,"text":1330},{"id":1344,"depth":1498,"text":1345},{"id":1461,"depth":1498,"text":1461},{"id":1474,"depth":1498,"text":1516},"附录：exit code含义","md",false,{"slots":1520},{},true,{"title":1085,"description":1106},"posts\u002F杂记\u002FQuadim四叉树图像处理",[479,480,481,482],"b7uDgHW2sEA8pD0KPdDSR5_QP51pQ414hisprNiI1-k",1790443290995]