{"id":3708,"date":"2024-08-19T07:42:39","date_gmt":"2024-08-18T23:42:39","guid":{"rendered":"https:\/\/fredkuo.idv.tw\/wordpress\/?p=3708"},"modified":"2024-08-19T07:45:07","modified_gmt":"2024-08-18T23:45:07","slug":"gray-balance-for-rgb-driving-printer","status":"publish","type":"post","link":"https:\/\/fredkuo.idv.tw\/wordpress\/?p=3708","title":{"rendered":"Gray balance for RGB (driving) printer."},"content":{"rendered":"

<\/b><\/p>\n

<\/p>\n

Gray balance for RGB (driving) printer.<\/p>\n

RGB \u5370\u8868\u6a5f\u7070\u5e73\u8861\u3002<\/p>\n

<\/p>\n

\u5728CMYK\u7684\u8f38\u51fa\u63a7\u5236\u53ef\u4ee5\u4f9d\u5faaG7\u7684\u898f\u7bc4\uff0c\u7c21\u55ae\u8b1b\uff0cC50M40Y40\u9019\u4e00\u500b\u8272\u584a\u5728\u8f38\u51fa\u6642\uff0cL*\u503c\u5927\u7d04\u572858\uff0ca*,b*\u503c\u5247\u70ba\u7d19\u5f35a*,b*\u503c\u7684\u4e00\u534a\u3002\u6709\u6e05\u695a\u7684\u76ee\u6a19\uff0c\u5c31\u80fd\u8a2d\u8a08\u51fa\u63a7\u5236\u65b9\u6cd5\u3002<\/p>\n

\u90a3\u4e9b\u6c92\u6709\u7d93\u904eRIP\uff0c\u7121\u6cd5\u55ae\u7368\u63a7\u5236CMYK\u983b\u9053\u7684RGB\u5370\u8868\u6a5f\u8981\u600e\u9ebc\u63a7\u5236\u7070\u5e73\u8861\u5462\uff1f<\/p>\n

\u6211\u7684\u67b6\u69cb\u88cf\uff0cG7 \u7070\u5e73\u8861\u7684\u6982\u5ff5\u53ef\u4ee5\u6cbf\u7528\uff0c\u4f46\u8272\u5f69\u6aa2\u6e2c\u7684\u7d50\u69cb\u8981\u91cd\u65b0\u5efa\u7acb\u3002<\/p>\n

\u5728CMYK\u6e2c\u8a66\u74b0\u5883\u4e2d\uff0cC50MY40 \u7684\u76ee\u6a19\u503c\u662fL*=58\uff0ca*,b*\u503c\u5247\u70ba\u7d19\u5f35a*,b*\u503c\u7684\u4e00\u534a\u3002\u5728RGB \u7d50\u69cb\u4e2d\uff0c\u7167\u8aaa50%\u7248\u8abf\u3001\u4e2d\u6027\u7070\u7684\u8a0a\u865f\u61c9\u8a72\u662f\u843d\u5728R127,G127,B127\u8655\uff0c\u4f46\u5728sRGB \u4ee5RGB=127\u89e3\u91cb\u51fa\u4f86\u7684Lab\u503c\u662f54,0,0\u3002\u70ba\u4e86\u7dad\u6301\u6e2c\u8a66\u8272\u584a\u80fd\u8207CMYK\u74b0\u5883\u4e2d\u7684L\u503c\u76f8\u540c(58)\uff0c\u6211\u628aRGB\u7070\u5e73\u8861\u7684\u6e2c\u8a66\u8272\u584a\u653e\u5728RGB=139\u3002<\/p>\n

<\/p>\n

Fig.\u70ba\u4e86\u7dad\u6301\u6e2c\u8a66\u8272\u584a\u80fd\u8207CMYK\u74b0\u5883\u4e2d\u7684L\u503c\u76f8\u540c(58)\uff0c\u6211\u628aRGB\u74b0\u5883\u7070\u5e73\u8861\u7684\u6e2c\u8a66\u8272\u584a\u653e\u5728RGB=139\u3002<\/p>\n

\u65bc\u662f\uff0c\u6211\u7684RGB\u5370\u8868\u6a5f\u7070\u5e73\u8861\u4f5c\u696d\u898f\u5247\u70ba\uff1a<\/p>\n

\u6e2c\u8a66\u8272\u584a\uff1aR=139,G=139,B=139\u3002<\/p>\n

L*\u76ee\u6a19\u503c=58\u3002<\/p>\n

a*,b* \u76ee\u6a19\u503c=\u7d19\u5f35 a*x0.46\u3001b*x0.46\u3002<\/p>\n

\u5728CMYK\u64cd\u4f5c\uff0c\u4e00\u822c\u9700\u8981Curve \u8edf\u9ad4\u4f86\u5e6b\u5fd9\u627eCMY\u7070\u5e73\u8861\u843d\u9ede\uff0c\u6211\u81ea\u5df1\u4e5f\u767c\u5c55\u904e\u5e7e\u500b\u968e\u6bb5\u7684\u7070\u5e73\u8861\u908f\u8f2f\uff0c\u76ee\u524d\u7528\u6700\u591a\u7684\u662f\u6211\u6240\u8b02\u7684\u7b2c\u4e8c\u968e\u6bb5\u7070\u5e73\u8861\u908f\u8f2f\uff0c\u9810\u6e2c\u503c\u4e5f\u8a31\u6c92\u6709Curve4\u597d\uff0c\u4f46\u4e5f\u8db3\u5920\u62ff\u5230G7 Targeted \u898f\u683c\u3002<\/p>\n

RGB \u5462\uff1f\u6c92\u6709Curve \u8edf\u9ad4\u53ef\u4ee5\u7528\uff0c\u6211\u8a66\u8457\u628a\u6211\u7684\u7b2c\u4e09\u500b\u7070\u5e73\u8861\u908f\u8f2f\u7528\u5728\u9019\u500b\u9805\u76ee\u3002<\/p>\n

\u6558\u8ff0\u4e00\u4e0b\u6211\u7684\u7070\u5e73\u8861\u64cd\u4f5c\u908f\u8f2f\uff1a<\/p>\n

1.\u6e2c\u91cf\u7d19\u5f35\uff0c\u53d6\u5f97\u7070\u5e73\u8861\u76ee\u6a19\u503c\uff0cL \u5b9a\u572858\uff0ca*,b*=\u7d19\u5f35 a*x0.46\u3001b*x0.46\u3002<\/p>\n

2. \u4ee5sRGB.icm\u70ba\u8a08\u7b97\u53c3\u8003\uff0c\u53ef\u4ee5\u53d6\u5f97\u7576L*=58\uff0ca* = \u7d19\u5f35 a*x0.46\u3001b*=\u7d19\u5f35b*x0.46\u6642\uff0c\u5176\u5728 sRGB \u7a7a\u9593\u4e2d\u7684 RGB\u503c\uff0c as R1,G1,B1\u3002<\/p>\n

3. \u6e2c\u91cfRGB139\u5370\u51fa\u4f86\u7684Lab\u503c\uff0c\u9019\u7d44Lab\u503c\u53ef\u4ee5\u8a08\u7b97\u51fa\u5176\u5728 sRGB \u7a7a\u9593\u7684 RGB \u503c\uff0cas R2,G2,B2\u3002<\/p>\n

4. \u6bd4\u5c0dR1,G1,B1\u8207R2,G2,B2\u7684\u5dee\u8ddd\uff0c\u5373\u53ef\u77e5\u9053\u539f\u5716\u61c9\u8a72\u5728RGB139\u8655\u505a\u600e\u6a23\u7684RGB \u4fee\u6b63\u91cf\uff0c\u53ef\u4ee5\u8f38\u51fa\u597d\u7684\u7070\u5e73\u8861\u3002<\/p>\n

\u908f\u8f2f\u67b6\u69cb\u770b\u4f86\u53ef\u884c\uff0c\u5be6\u969b\u64cd\u4f5c\u4e0b\u4f86\u4e5f\u6709\u4e00\u5b9a\u7684\u6548\u679c\u3002\u89c0\u5bdf\u6578\u5341\u7d44\u6578\u64da\u4e0b\u4f86\uff0c\u770b\u4f86\u53ef\u4ee5\u4ecb\u5165\u4e00\u4e9b\u7cfb\u7d71\u6027\u7684\u4fc2\u6578\u4fee\u98fe\u3002\u6700\u5f8c\u7684\u7d50\u679c\u5982\u4e0b\u3002<\/p>\n

<\/p>\n

Fig. \u7d19\u5f35\u6a23\u672c1\uff0c\u7d19\u767d\u70ba95.5,1.9,-8.51\uff0c\u7070\u5e73\u8861\u76ee\u6a19\u503c\u70ba58,0.87,-3.91\u3002\u5be6\u969b\u6e2c\u5f97RGB139\u8272\u5f69\u503c\u70ba50.79,9.67,3.11\u3002L \u503c\u5dee(dL)7.21\uff0c\u7070\u5dee(df)11.26\uff0c\u8272\u5dee(de)13.37\u3002\u8a08\u7b97\u51fa\u4fee\u6b63\u91cf\u70baR139->138.7\u3001G139->155.8\u3001B139->160.1\u3002<\/p>\n

<\/p>\n

Fig. \u7d19\u5f35\u6a23\u672c1\u3002\u4fee\u6b63\u5f8c\u7070\u8272\u584a\u8272\u5f69\u503c\u70ba55.57,0.39,-4.79\u3002L \u503c\u5dee(dL)2.43\uff0c\u7070\u5dee(df)1\uff0c\u8272\u5dee(de)2.63\u3002\u5f9e\u6578\u64da\u9762\u4e0a\u770b\u5df2\u7d93\u6709\u5f88\u5927\u7684\u6539\u5584\u3002<\/p>\n

<\/p>\n

Fig. \u8996\u89ba\u4e0a\u6aa2\u8996\uff0c\u4fee\u6b63\u524d\u8f38\u51fa\u504f\u7d05\uff0c\u4fee\u6b63\u5f8c\u7070\u5e73\u8861\u5f97\u5230\u660e\u986f\u7684\u6539\u5584\u3002<\/p>\n

<\/p>\n

Fig. \u7d19\u5f35\u6a23\u672c2\uff0c\u7d19\u767d\u70ba93.43,2.1,-6.58\uff0c\u7070\u5e73\u8861\u76ee\u6a19\u503c\u70ba58,0.97,-3.03\u3002\u5be6\u969b\u6e2c\u5f97RGB139\u8272\u5f69\u503c\u70ba53.33,7.18,2.18\u3002L \u503c\u5dee(dL)4.67\uff0c\u7070\u5dee(df)8.11\uff0c\u8272\u5dee(de)9.36\u3002\u8a08\u7b97\u51fa\u4fee\u6b63\u91cf\u70baR139->137.6\u3001G139->150.1\u3001B139->153.5\u3002<\/p>\n

<\/p>\n

Fig. \u7d19\u5f35\u6a23\u672c2\u3002\u4fee\u6b63\u5f8c\u7070\u8272\u584a\u8272\u5f69\u503c\u70ba55.84,0.83,-2.84\u3002L \u503c\u5dee(dL)2.16\uff0c\u7070\u5dee(df)0.24\uff0c\u8272\u5dee(de)2.17\u3002\u5f9e\u6578\u64da\u9762\u4e0a\u770b\u6709\u5f88\u5927\u7684\u6539\u5584\u3002<\/p>\n

<\/p>\n

Fig. \u8996\u89ba\u4e0a\u6aa2\u8996\uff0c\u4fee\u6b63\u524d\u8f38\u51fa\u540c\u6a23\u504f\u7d05\uff0c\u4fee\u6b63\u5f8c\u7070\u5e73\u8861\u5f97\u5230\u660e\u986f\u7684\u6539\u5584\u3002<\/p>\n

\u6700\u5f8c\u4f86\u6bd4\u8f03\u4e00\u4e0b\u8207icc\u7a0b\u5e8f\u7684\u5dee\u5225\uff0c\u82e5\u4ee5icc\u65b9\u5f0f\u8f38\u51fa\uff0c\u6578\u64da\u5982\u4e0b\uff1a<\/p>\n

<\/p>\n

Fig. \u4ee5icc\u65b9\u5f0f\u8f38\u51fa\u3002\u7070\u8272\u584a\u8272\u5f69\u503c\u70ba56.19,0.79,-4.5\u3002L \u503c\u5dee(dL)1.75\uff0c\u7070\u5dee(df)1.79\uff0c\u8272\u5dee(de)2.54\u3002\u5c31\u6578\u5b57\u9762\u4f86\u8b1b\uff0c\u8ddf\u7070\u5e73\u8861\u7a0b\u5e8f\u9054\u6210\u7684\u6578\u503c\u5dee\u4e0d\u591a\u3002<\/p>\n

<\/p>\n

Fig. \u5de6\u908a\u7232\u7070\u5e73\u8861\u4fee\u6b63\u7a0b\u5e8f\uff0c\u53f3\u908a\u70baicc\u7a0b\u5e8f\uff0c\u5927\u9762\u7a4d\u7684\u505c\u8eca\u5834\u5730\u9762\u9084\u662f\u770b\u5f97\u51fa\u4e00\u9ede\u5dee\u5225\uff0c\u5728\u9019\u4e00\u5f35\uff0c\u7070\u5e73\u8861\u7a0b\u5e8f\u7684\u91d1\u9f9c\u8eca\u9ec3\u8272\u8981\u66f4\u98fd\u548c\u4e9b\u3002<\/p>\n

<\/p>\n

Fig. \u5de6\u908a\u7232\u7070\u5e73\u8861\u4fee\u6b63\u7a0b\u5e8f\uff0c\u53f3\u908a\u70baicc\u7a0b\u5e8f\uff0c\u5169\u908a\u770b\u8d77\u4f86\u5dee\u4e0d\u591a\uff0cicc\u7a0b\u5e8f\u7684\u85cd\u5929\u66f4\u98fd\u548c\u4e9b\u3002<\/p>\n

\u5927\u81f4\u4e0a\u4f86\u770bicc\u7a0b\u5e8f\u8207\u7070\u5e73\u8861\u7a0b\u5e8f\u5448\u73fe\u51fa\u5dee\u4e0d\u591a\u7684\u6548\u679c\uff0c\u4e0d\u904e\u5927\u5bb6\u8981\u77e5\u9053icc\u7a0b\u5e8f\u5fc5\u9700\u904e\u5927\u91cf\u7684\u6578\u64da\u6e2c\u91cf\u53ca\u8db3\u5920\u7684\u8edf\u9ad4\u8cc7\u6e90\u624d\u80fd\u9054\u6210\u3002\u76f8\u8f03\u65bc\u7070\u5e73\u8861\u55ae\u9ede\u4fee\u6b63\uff0c\u7070\u5e73\u8861\u7a0b\u5e8f\u53ea\u8981\u6e2c\u4e00\u500b\u9ede\uff0c\u5c31\u5e36\u51fa\u5dee\u4e0d\u591a\u7684\u6548\u679c\uff0c\u662f\u4e00\u500b\u76f8\u5c0d\u5f88\u6709\u6548\u7387\u7684\u5de5\u4f5c\u65b9\u6cd5\u3002<\/p>\n

\u8981\u4ed4\u7d30\u53bb\u6bd4\uff0cicc \u9084\u662f\u80fd\u5e36\u4f86\u66f4\u5168\u9762\u7684\u8272\u5f69\u6e96\u5ea6\uff0c\u4f46icc\u4e5f\u6709\u5b83\u7684\u7f3a\u9ede\uff0c\u5728\u8272\u57df\u7a7a\u9593\u8f49\u63db\u6642\uff0c\u6700\u4eae\u3001\u6700\u6697\u7684\u5730\u65b9\u4ee5\u53ca\u6700\u98fd\u548c\u7684\u5730\u65b9\u6709\u6642\u5019\u6703\u88ab\u58d3\u7e2e\u5230\uff1b\u7528RGB Printer driver \u76f4\u63a5\u9a45\u52d5\uff0c\u6709\u53ef\u80fd\u6703\u6709\u66f4\u597d\u7684dynamic  range \u53ca\u66f4\u98fd\u548c\u7684\u984f\u8272\uff0c\u9019\u6642\u5019\u53ea\u8981\u628a\u7070\u5e73\u8861\u6293\u5c0d\uff0c\u8f38\u51fa\u54c1\u8cea\u4e0d\u6703\u6709\u592a\u5927\u554f\u984c\uff0c\u6709\u53ef\u80fd\u9084\u6703\u66f4\u98fd\u548c\uff0c\u66f4 pleasing\u3002<\/p>\n

<\/b><\/p>\n","protected":false},"excerpt":{"rendered":"

Gray balance for RGB (driving) printer. RGB \u5370\u8868\u6a5f\u7070\u5e73\u8861\u3002 \u5728CM […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3708","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/fredkuo.idv.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3708"}],"collection":[{"href":"https:\/\/fredkuo.idv.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fredkuo.idv.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fredkuo.idv.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fredkuo.idv.tw\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3708"}],"version-history":[{"count":3,"href":"https:\/\/fredkuo.idv.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3708\/revisions"}],"predecessor-version":[{"id":3711,"href":"https:\/\/fredkuo.idv.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3708\/revisions\/3711"}],"wp:attachment":[{"href":"https:\/\/fredkuo.idv.tw\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3708"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fredkuo.idv.tw\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3708"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fredkuo.idv.tw\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3708"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}