{"id":4072,"date":"2026-05-20T14:38:20","date_gmt":"2026-05-20T06:38:20","guid":{"rendered":"https:\/\/fredkuo.idv.tw\/wordpress\/?p=4072"},"modified":"2026-05-20T14:38:20","modified_gmt":"2026-05-20T06:38:20","slug":"finding-gray-with-ai","status":"publish","type":"post","link":"https:\/\/fredkuo.idv.tw\/wordpress\/?p=4072","title":{"rendered":"Finding Gray with AI"},"content":{"rendered":"\n

Finding Gray with ai<\/p>\n\n\n\n

\u8207\u4eba\u5de5\u667a\u80fd\u4e00\u8d77\u5c0b\u627e\u7070\u5e73\u8861<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Finding Gray with ai<\/p>\n\n\n\n

\u7070\u5e73\u8861(\u542b\u4eae\u5ea6\u5dee\u8207\u7070\u5dee)\u5c0d\u5370\u5237\u4f5c\u696d\u4f86\u8b1b\u662f\u4e00\u500b\u91cd\u8981\u7684\u63a7\u5236\u9805\uff0c\u73fe\u4eca\u5e02\u5834\u4e0a\u7684\u6280\u8853\u4e5f\u975e\u5e38\u6210\u719f\uff0c\u57fa\u672c\u4e0aP2P (300\u683c)\u5c0e\u5177+Curve \u8edf\u9ad4\u53ef\u4ee5\u9054\u5230\u5f88\u597d\u7684\u6548\u679c\uff0c\u4f46\u7562\u7adf\u6709\u5176\u5efa\u7f6e\u6210\u672c\u53ca\u6280\u8853\u7684\u9580\u6abb\uff0c\u4e5f\u5c31\u662f\u8aaa\uff0c\u5927\u591a\u6578\u7684\u5716\u50cf\u8f38\u51fa\u5f9e\u696d\u4eba\u54e1\u9084\u662f\u6c92\u80fd\u5177\u5099\u9019\u6a23\u7684\u80fd\u529b\uff0c\u7121\u6cd5\u505a\u9019\u6a23\u7684\u64cd\u4f5c\uff0c\u518d\u8005\uff0c\u5f88\u591a\u7522\u54c1\u4e5f\u7121\u9808\u9054\u5230 P2P+Curve \u7684\u7cbe\u5ea6\uff0c\u56e0\u6b64\uff0c\u6211\u4e5f\u4e00\u76f4\u5728\u5c0b\u627e\u66f4\u7c21\u4fbf\u7684\u505a\u6cd5\uff0c\u7cbe\u5ea6\u6216\u8a31\u5dee\u4e00\u4e9b\uff0c\u4f46\u5efa\u7f6e\u6210\u672c\u53ca\u6280\u8853\u9580\u6abb\u6703\u964d\u4f4e\u5f88\u591a\uff0c\u5e0c\u671b\u80fd\u8b93\u66f4\u591a\u7684\u540c\u696d\u4eba\u54e1\u80fd\u9032\u5165\u9019\u500b\u9818\u57df\u3002<\/p>\n\n\n\n

\u6211\u81ea\u5df1\u5728\u7070\u8272\u5e73\u8861\u5c0b\u627e\u7684\u5de5\u5177\u4e0a\u81f3\u5c11\u767c\u5c55\u904e\u4e09\u4ee3\uff0c\u4e5f\u90fd\u6709\u4e00\u5b9a\u7684\u6548\u679c\u3002\u73fe\u4ecaAI\u7684\u80fd\u529b\u5982\u6b64\u5f37\u5927\uff0c\u6211\u5c31\u8a66\u8457\u770b\u770bAI\u80fd\u63d0\u51fa\u4ec0\u9ebc\u6a23\u7684\u5de5\u4f5c\u65b9\u6cd5\u3002<\/p>\n\n\n\n

\u5728\u7a0b\u5f0f\u958b\u767c\u4e0a\uff0c\u4e00\u76f4\u6bd4\u8f03\u7fd2\u6163\u7528Claude\uff0c\u9019\u4e00\u6b21\u5de5\u4f5c\u7684\u958b\u767c\uff0c\u5728\u6982\u5ff5\u7684\u8a0e\u8ad6\u53ca\u7a0b\u5f0f\u78bc\u7684\u5f62\u6210\uff0c90%\u4ee5\u4e0a\u662f\u7d93\u7531Claude \u5b8c\u6210\u3002<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Fig. P2P (300\u683c)\u5c0e\u5177+Curve \u8edf\u9ad4\u53ef\u4ee5\u9054\u5230\u5f88\u597d\u7684\u7070\u5e73\u8861\u6548\u679c<\/p>\n\n\n\n

\u5982\u524d\u8ff0\uff0c\u6b63\u898f\u505a\u6cd5\u7684p2p\u5c0e\u5177\u9700\u8981\u6e2c\u91cf300\u500b\u8272\u584a\uff0c\u9019\u4e00\u6b21\u8a66\u8457\u6539\u5beb\u6211\u7d93\u5e38\u4f7f\u7528\u7684CT 25\u5de5\u5177\uff0c\u540c\u6a23\u662f25\u683c\uff0c\u4f46\u901925\u683c\u6703\u5168\u90e8\u7528\u4f86\u5c0b\u627e\u66f4\u597d\u7684\u7070\u5e73\u8861\u3002<\/p>\n\n\n\n

\u65bc\u662f\u6211\u958b\u8d77\u4e86\u8207AI\u7684\u5c0d\u8a71\uff1a<\/p>\n\n\n\n


If I only have 25 patches available, what arrangement should I use to predict the CMY combination for target gray values at 25%, 50%, and 75%, with target Lab values of (75, 0.48, 1.92), (57.5, 0.32, 1.28), and (39, 0.16, 0.64)? <\/p>\n\n\n\n

\u53d6\u5f97\u7684\u7b2c\u4e00\u6b21\u53cd\u61c9\u5982\u4e0b<\/p>\n\n\n\n

\u898f\u5283\u7b56\u7565\u5982\u4e0b\uff1a7 \u500b\u4e3b\u8ef8\u8272\u584a<\/strong>\uff08\u5b9a\u7fa9 L* \u8207 CMY \u8986\u84cb\u7387\u66f2\u7dda\uff09+ 6 \u500b\u661f\u72c0\u8272\u584a<\/strong> \u00d7 3 \u500b\u5340\u57df\uff08\u6620\u5c04\u5c40\u90e8\u7684 CMY->Lab \u68af\u5ea6\u4ee5\u9032\u884c\u9006\u5411\u8a08\u7b97\uff09\u3002<\/p>\n\n\n\n

\u7b2c 1 \u7d44 \u2014 \u4e2d\u6027\u4e3b\u8ef8\uff1a7 \u500b\u8272\u584a<\/strong><\/h3>\n\n\n\n

\u5efa\u7acb\u5404\u968e\u8abf\u5340\u57df\u7684 L* \u4f4d\u7f6e\u3002C\uff08\u9752\u8272\uff09\u7684\u6bd4\u4f8b\u4fdd\u6301\u7565\u9ad8\u65bc M\uff08\u6d0b\u7d05\uff09= Y\uff08\u9ec3\u8272\uff09\uff0c\u9019\u662f\u591a\u6578\u5370\u5237\u6a5f\u5178\u578b\u7684\u7070\u5e73\u8861\u504f\u7f6e\uff1a<\/p>\n\n\n\n

#<\/td>C<\/td>M<\/td>Y<\/td>Purpose<\/td><\/tr>
1<\/td>0<\/td>0<\/td>0<\/td>Paper white<\/td><\/tr>
2<\/td>10<\/td>8<\/td>8<\/td>Near highlight<\/td><\/tr>
3<\/td>20<\/td>16<\/td>16<\/td>25% zone center<\/td><\/tr>
4<\/td>35<\/td>28<\/td>28<\/td>Between zones<\/td><\/tr>
5<\/td>50<\/td>40<\/td>40<\/td>50% zone center<\/td><\/tr>
6<\/td>62<\/td>50<\/td>50<\/td>Between zones<\/td><\/tr>
7<\/td>75<\/td>62<\/td>62<\/td>75% zone center<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n\n\n\n

\u7b2c 2 \u7d44 \u2014 25% \u5340\u57df\u661f\u72c0\u5206\u4f48\uff1a6 \u500b\u8272\u584a\uff08\u570d\u7e5e\u4e3b\u8ef8\u8272\u584a #3\uff09<\/strong><\/h3>\n\n\n\n
#<\/td>C<\/td>M<\/td>Y<\/td>Maps<\/td><\/tr>
8<\/td>20<\/td>16<\/td>21<\/td>+Y \u2192 b* positive<\/td><\/tr>
9<\/td>20<\/td>16<\/td>11<\/td>\u2212Y \u2192 b* negative<\/td><\/tr>
10<\/td>20<\/td>21<\/td>16<\/td>+M \u2192 a* positive<\/td><\/tr>
11<\/td>20<\/td>11<\/td>16<\/td>\u2212M \u2192 a* negative<\/td><\/tr>
12<\/td>25<\/td>16<\/td>16<\/td>+C \u2192 L* darker<\/td><\/tr>
13<\/td>15<\/td>16<\/td>16<\/td>\u2212C \u2192 L* lighter<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n\n\n\n

\u7b2c 3 \u7d44 \u2014 50% \u5340\u57df\u661f\u72c0\u5206\u4f48\uff1a6 \u500b\u8272\u584a\uff08\u570d\u7e5e\u4e3b\u8ef8\u8272\u584a #5\uff09<\/strong><\/h3>\n\n\n\n
#<\/td>C<\/td>M<\/td>Y<\/td>Maps<\/td><\/tr>
14<\/td>50<\/td>40<\/td>45<\/td>+Y<\/td><\/tr>
15<\/td>50<\/td>40<\/td>35<\/td>\u2212Y<\/td><\/tr>
16<\/td>50<\/td>45<\/td>40<\/td>+M<\/td><\/tr>
17<\/td>50<\/td>35<\/td>40<\/td>\u2212M<\/td><\/tr>
18<\/td>55<\/td>40<\/td>40<\/td>+C<\/td><\/tr>
19<\/td>45<\/td>40<\/td>40<\/td>\u2212C<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n\n\n\n

\u7b2c 4 \u7d44 \u2014 75% \u5340\u57df\u661f\u72c0\u5206\u4f48\uff1a6 \u500b\u8272\u584a\uff08\u570d\u7e5e\u4e3b\u8ef8\u8272\u584a #7\uff09<\/strong><\/h3>\n\n\n\n
#<\/td>C<\/td>M<\/td>Y<\/td>Maps<\/td><\/tr>
20<\/td>75<\/td>62<\/td>67<\/td>+Y<\/td><\/tr>
21<\/td>75<\/td>62<\/td>57<\/td>\u2212Y<\/td><\/tr>
22<\/td>75<\/td>67<\/td>62<\/td>+M<\/td><\/tr>
23<\/td>75<\/td>57<\/td>62<\/td>\u2212M<\/td><\/tr>
24<\/td>80<\/td>62<\/td>62<\/td>+C<\/td><\/tr>
25<\/td>70<\/td>62<\/td>62<\/td>\u2212C<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u5176\u4e3b\u8981\u7070\u8272\u9810\u6e2c\u7b56\u7565\u5982\u4e0b\uff1a<\/p>\n\n\n\n

\u5728\u6bcf\u500b\u5340\u57df\uff0c\u9019 6 \u500b\u661f\u72c0\u8272\u584a\u80fd\u63d0\u4f9b\u4e00\u500b\u5c40\u90e83×3 \u96c5\u53ef\u6bd4\u77e9\u9663\uff08Jacobian\uff09\uff1a<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Fig. 3×3 Jacobian matrix<\/p>\n\n\n\n

\u6c42\u6b64 3×3  \u77e9\u9663\u7684\u9006\u77e9\u9663\uff0c\u5373\u53ef\u8a08\u7b97\u51fa\u76f8\u5c0d\u65bc\u4e3b\u8ef8\u4e2d\u5fc3\u7684\u0394C, \u0394M, \u0394Y\u4fee\u6b63\u91cf\uff0c\u5f9e\u800c\u7cbe\u6e96\u9054\u5230\u76ee\u6a19\u503c\uff08\u4f8b\u5982 75, 0.48, 1.92 \u7b49\uff09\u3002<\/p>\n\n\n\n

\u5148\u8aaa\uff0c\u6211\u4e5f\u4e0d\u6e05\u695a Jacobian matrix \u662f\u4ec0\u9ebc\u6771\u897f\uff1f\u662f\u5982\u4f55\u904b\u4f5c\uff1f\u4f46\u6211\u53ef\u4ee5\u628a\u5b83\u9810\u6e2c\u51fa\u4f86\u7684\u6578\u503c\u53bb\u505a\u5be6\u9ad4\u7684\u9a57\u8b49\uff0c\u53ef\u4e0d\u53ef\u884c\uff0c \u6578\u64da\u51fa\u4f86\u5c31\u77e5\u9053\u4e86\uff01<\/p>\n\n\n\n

\u7e3d\u4e4b\uff0c\u7d93\u904e\u5e7e\u8f2a\u7684\u4fee\u6b63\uff0c\u6700\u5f8c\u768425\u683c\u5206\u4f48\u5982\u4e0b\uff1a<\/p>\n\n\n\n

Group 1 \u2014 Neutral Spine: 7 patches<\/p>\n\n\n\n

#<\/td>C<\/td>M<\/td>Y<\/td>Purpose<\/td><\/tr>
1<\/td>0<\/td>0<\/td>0<\/td>Paper white \u2014 highlight L* anchor<\/td><\/tr>
2<\/td>100<\/td>100<\/td>100<\/td>CMY solid \u2014 shadow L* anchor<\/td><\/tr>
3<\/td>25<\/td>19<\/td>19<\/td>25% zone center<\/td><\/tr>
4<\/td>38<\/td>30<\/td>30<\/td>Between zones<\/td><\/tr>
5<\/td>50<\/td>40<\/td>40<\/td>50% zone center<\/td><\/tr>
6<\/td>63<\/td>53<\/td>53<\/td>Between zones<\/td><\/tr>
7<\/td>75<\/td>66<\/td>66<\/td>75% zone center<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Group 2 \u2014 25% Zone Star: 6 patches<\/p>\n\n\n\n

#<\/td>C<\/td>M<\/td>Y<\/td>Maps<\/td><\/tr>
8<\/td>25<\/td>19<\/td>24<\/td>+Y \u2192 b* positive<\/td><\/tr>
9<\/td>25<\/td>19<\/td>14<\/td>\u2212Y \u2192 b* negative<\/td><\/tr>
10<\/td>25<\/td>24<\/td>19<\/td>+M \u2192 a* positive<\/td><\/tr>
11<\/td>25<\/td>14<\/td>19<\/td>\u2212M \u2192 a* negative<\/td><\/tr>
12<\/td>30<\/td>19<\/td>19<\/td>+C \u2192 L* darker<\/td><\/tr>
13<\/td>20<\/td>19<\/td>19<\/td>\u2212C \u2192 L* lighter<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Group 3 \u2014 50% Zone Star: 6 patches<\/p>\n\n\n\n

#<\/td>C<\/td>M<\/td>Y<\/td>Maps<\/td><\/tr>
14<\/td>50<\/td>40<\/td>45<\/td>+Y<\/td><\/tr>
15<\/td>50<\/td>40<\/td>35<\/td>\u2212Y<\/td><\/tr>
16<\/td>50<\/td>45<\/td>40<\/td>+M<\/td><\/tr>
17<\/td>50<\/td>35<\/td>40<\/td>\u2212M<\/td><\/tr>
18<\/td>55<\/td>40<\/td>40<\/td>+C<\/td><\/tr>
19<\/td>45<\/td>40<\/td>40<\/td>\u2212C<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Group 4 \u2014 75% Zone Star: 6 patches<\/p>\n\n\n\n

#<\/td>C<\/td>M<\/td>Y<\/td>Maps<\/td><\/tr>
20<\/td>75<\/td>66<\/td>71<\/td>+Y<\/td><\/tr>
21<\/td>75<\/td>66<\/td>61<\/td>\u2212Y<\/td><\/tr>
22<\/td>75<\/td>71<\/td>66<\/td>+M<\/td><\/tr>
23<\/td>75<\/td>61<\/td>66<\/td>\u2212M<\/td><\/tr>
24<\/td>80<\/td>66<\/td>66<\/td>+C<\/td><\/tr>
25<\/td>70<\/td>66<\/td>66<\/td>\u2212C<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u5176\u9593\uff0c\u63d0\u4f9bClaude \u76f8\u95dcG7\u5c0d\u65bc\u76ee\u6a19 L*\u53ca\u76ee\u6a19 a*,b*\u7684\u8a08\u7b97\u65b9\u6cd5\uff0c\u4ee5\u6b64\uff0c\u6e96\u5099\u597d\u5c0e\u5177\uff0c\u6539\u5bebSDK\uff0c\u7070\u8272\u9810\u6e2c\u53ca\u8a55\u5206\u7531 Claude agent \u81ea\u884c\u5f62\u6210\u7a0b\u5f0f\u78bc\u3002<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Fig. CT25gray \u5c0e\u5177\uff0cCMY \u6a21\u5f0f\u3002<\/p>\n\n\n\n

\u628a\u9019\u500b\u5de5\u5177\u62ff\u5230\u4e00\u6578\u4f4d\u78b3\u7c89\u6a5f\u505a\u6e2c\u8a66\uff0c\u76f4\u63a5\u770b\u4e00\u4e0b\u6210\u679c\uff1a<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Fig. \u67d0\u6578\u4f4d\u78b3\u7c89\u6a5f\u539f\u59cb\u72c0\u614b\uff0c\u5728\u6211\u7684\u7070\u5e73\u8861\u8a55\u5206\u7cfb\u7d71\u53d6\u5f97\u6eff\u520628\u5206\u4e2d\u76843\u5206\uff0c25%\u7070\u4fee\u6b63\u503c\u70ba(20,20,16)\uff0c50%\u7070\u4fee\u6b63\u503c(40,39,33)\uff0c75%\u7070\u4fee\u6b63\u503c(62,63,55)\u3002<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Fig. \u4fee\u6b63\u72c0\u614b\uff0c\u5728\u7070\u5e73\u8861\u8a55\u5206\u7cfb\u7d71\u53d6\u5f97\u6eff\u520628\uff0c\u6539\u5584\u6548\u679c\u975e\u5e38\u660e\u986f\u3002<\/p>\n\n\n\n

\u7531\u4e0a\u8ff0\u6848\u4f8b\u53ef\u4ee5\u770b\u5f97\u51fa\u4f86\u6539\u5584\u6548\u679c\u975e\u5e38\u660e\u986f\uff0c\u539f\u672c\u504f\u7da0\u53ca\u504f\u6697\u7684\u72c0\u6cc1\u90fd\u6709\u4fee\u6b63\u56de\u4f86\uff0c\u800c\u4e14\u5f97\u5230\u7684\u6578\u503c\u90fd\u9084\u4e0d\u932f\u3002<\/p>\n\n\n\n

\u518d\u4e00\u500b\u6848\u4f8b\uff1a<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Fig. \u53e6\u4e00\u578b\u78b3\u7c89\u6a5f\uff0c\u539f\u59cb\u5206\u657814\/28\u3002<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Fig. \u4fee\u6b63\u5f8c\u53d6\u5f97 28\/28\u3002<\/p>\n\n\n\n

\u7b2c\u4e8c\u500b\u6848\u4f8b\u4fee\u6b63\u503c\u4e00\u6a23\u660e\u986f\u6709\u6548\u3002<\/p>\n\n\n\n

\u518d\u4e0b\u4f86\u6211\u60f3\u77e5\u9053\u4e00\u4e0b\u5b83\u8ddfCurve \u8edf\u9ad4300\u683c\u4f5c\u696d\u7684\u5dee\u8ddd\uff0c\u65bc\u662f\u7528P2P\u8ddfCurve\u518d\u505a\u4e00\u6b21\u4fee\u6b63\u4f5c\u696d\uff0c\u9a57\u8b49\u7d50\u679c\u81ea\u7136\u662f28\/28\u6eff\u5206\u3002<\/p>\n\n\n\n

\u76ee\u524d\u5169\u500b\u6848\u4f8b\u4e0b\u4f86\uff0cCT25Gray \u5de5\u5177\u6709\u6a5f\u6703\u53d6\u4ee3 P2P+ Curve \u55ce\uff1f\u73fe\u5728\u9084\u4e0d\u597d\u8aaa\uff0c\u4f46\u975e\u5e38\u6709\u6a5f\u6703\uff0c\u6211\u6703\u6301\u7e8c\u9a57\u8b49\u3002\u6211\u4e5f\u554f\u4e86AI\u5c0d\u65bc\u4e00\u7a2e\u65b0\u578b\u4f5c\u696d\u7684\u958b\u767c\uff0c\u8981\u591a\u5c11\u6a23\u672c\u624d\u80fd\u5ba3\u544a\u6709\u6548\uff1fAI \u56de\u7b54Minimum valid claim \u81f3\u5c11\u9054\u523030\u500b\uff0c\u90a3\u5c31\u7b49\u5230\u6536\u592030\u500b\u6a23\u672c\u518d\u4f86\u505a\u4e00\u6b21\u6574\u7406\u8aaa\u660e\u3002<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Fig. P2P + Curve \u7684\u4fee\u6b63\u8868\u73fe\uff0c\u81ea\u7136\u662f28\/28\u3002<\/p>\n\n\n\n

\u65e2\u7136\u90fd\u662f\u6eff\u5206\uff0c\u90a3\u9084\u6709\u4ec0\u9ebc\u597d\u6bd4\u7684\uff1f\u6211\u628a\u898f\u683c\u518d\u5206\u7d30\u4e00\u9ede\uff0c\u628aP2P\u4f5c\u696d\u8207CT25Gray\u4f5c\u696d\u7684\u4eae\u5ea6\u5dee\u8207\u7070\u5dee\u505a\u7e3d\u500b\u7e3d\u5408\uff1bP2P \u662f 3.5\uff0cCT25Gray \u662f3.2\uff0c\u4f9d\u6578\u64da\uff0cCT25Gray \u8868\u73fe\u9084\u597d\u4e00\u4e9b\uff1b\u4e0d\u904e\uff0c\u9019\u500b\u5dee\u8ddd\u5df2\u7d93\u6c92\u6709\u4ec0\u9ebc\u610f\u7fa9\u4e86\u3002<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Fig. \u628a\u5169\u908a\u7684\u4eae\u5ea6\u5dee\u8207\u7070\u5dee\u505a\u7e3d\u500b\u7e3d\u5408\uff0cP2P \u662f 3.5\uff0cCT25 Gray \u662f3.2\uff0c\u9019\u500b\u5dee\u8ddd\u5df2\u7d93\u6c92\u6709\u4ec0\u9ebc\u610f\u7fa9\u4e86\u3002<\/p>\n\n\n\n

\u540c\u6a23\u7684\u6982\u5ff5\u518d\u5ef6\u4f38\u767c\u5c55\uff0c\u5c0d\u5f71\u50cf\u8f38\u51fa\u800c\u8a00\uff0c\u5c0d\u65bc\u8272\u57df\u8f03\u5ee3\u7684\u8f38\u51fa\u8a2d\u5099(\u6578\u4f4d\u5674\u58a8\u3001\u5ee3\u8272\u57df\u5370\u5237\u2026\u2026)\u76f4\u63a5\u4ee5RGB \u6a21\u5f0f\u8f38\u51fa\u6709\u53ef\u80fd\u53d6\u5f97\u8f03CMYK\u6a21\u5f0f(\u5982CRPC6, Fogra39)\u66f4\u98fd\u548c\u7684\u8272\u5f69\uff1b\u4f46G7\u4e26\u672a\u5b9a\u7fa9RGB printer \u7684\u505a\u6cd5\uff0c\u6211\u8ddfAI\u8a0e\u8ad6\u4e86\u9019\u65b9\u9762\u7684\u554f\u984c\uff0c\u65bc\u662f\u6709\u4e86\u9019\u6a23\u7684\u505a\u6cd5\uff1a<\/p>\n\n\n\n

RGB 25-Patch Gray Balance Layout<\/p>\n\n\n\n

The star-pattern structure maps directly from CMY\u2192RGB by substituting channels. The central patch at each tone has R=G=B (equal channels), surrounded by \u00b1\u0394 satellites for each channel.<\/p>\n\n\n\n

Channel analogy<\/p>\n\n\n\n

CMY channel RGB equivalent Lab axis primarily affected<\/p>\n\n\n\n

C (cyan) R (red) a*<\/p>\n\n\n\n

M (magenta) G (green) a*, b*<\/p>\n\n\n\n

Y (yellow) B (blue) b*<\/p>\n\n\n\n

Full 25-patch layout (0\u2013255 scale, \u0394=13 \u2248 5%)<\/p>\n\n\n\n

#<\/td>Role<\/td>R<\/td>G<\/td>B<\/td><\/tr>
1<\/td>White <\/td>255<\/td>255<\/td>255<\/td><\/tr>
2<\/td>RGB Black<\/td>0<\/td>0<\/td>0<\/td><\/tr>
3<\/td>Ctr Highlight<\/td>191<\/td>191<\/td>191<\/td><\/tr>
4<\/td>TRC linearity <\/td>217<\/td>217<\/td>217<\/td><\/tr>
5<\/td>Ctr Midtone<\/td>128<\/td>128<\/td>128<\/td><\/tr>
6<\/td>GB+\u0394<\/td>128<\/td>141<\/td>141<\/td><\/tr>
7<\/td>Ctr Shadow<\/td>64<\/td>64<\/td>64<\/td><\/tr>
8<\/td>B+\u0394 @ Hi<\/td>191<\/td>191<\/td>204<\/td><\/tr>
9<\/td>B\u2212\u0394 @ Hi<\/td>191<\/td>191<\/td>178<\/td><\/tr>
10<\/td>G+\u0394 @ Hi<\/td>191<\/td>204<\/td>191<\/td><\/tr>
11<\/td>G\u2212\u0394 @ Hi<\/td>191<\/td>178<\/td>191<\/td><\/tr>
12<\/td>R+\u0394 @ Hi<\/td>204<\/td>191<\/td>191<\/td><\/tr>
13<\/td>R\u2212\u0394 @ Hi<\/td>178<\/td>191<\/td>191<\/td><\/tr>
14<\/td>B+\u0394 @ Mid<\/td>128<\/td>128<\/td>141<\/td><\/tr>
15<\/td>B\u2212\u0394 @ Mid<\/td>128<\/td>128<\/td>115<\/td><\/tr>
16<\/td>G+\u0394 @ Mid<\/td>128<\/td>141<\/td>128<\/td><\/tr>
17<\/td>G\u2212\u0394 @ Mid<\/td>128<\/td>115<\/td>128<\/td><\/tr>
18<\/td>R+\u0394 @ Mid<\/td>141<\/td>128<\/td>128<\/td><\/tr>
19<\/td>R\u2212\u0394 @ Mid<\/td>115<\/td>128<\/td>128<\/td><\/tr>
20<\/td>B+\u0394 @ Shad<\/td>64<\/td>64<\/td>77<\/td><\/tr>
21<\/td>B\u2212\u0394 @ Shad<\/td>64<\/td>64<\/td>51<\/td><\/tr>
22<\/td>G+\u0394 @ Shad<\/td>64<\/td>77<\/td>64<\/td><\/tr>
23<\/td>G\u2212\u0394 @ Shad<\/td>64<\/td>51<\/td>64<\/td><\/tr>
24<\/td>R+\u0394 @ Shad<\/td>77<\/td>64<\/td>64<\/td><\/tr>
25<\/td>R\u2212\u0394 @ Shad<\/td>51<\/td>64<\/td>64<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\"\"<\/a><\/figure>\n\n\n\n

Fig. CT25gray \u5c0e\u5177\uff0cRGB printer \u6a21\u5f0f<\/p>\n\n\n\n

\u8ddfCMY \u6a21\u5f0f\u4e0d\u540c\u7684\u662f\uff0c\u76ee\u6a19L*\u4e0d\u662f\u4f9d\u7167 G7 TR015 \u66f2\u7dda\uff0c\u800c\u662f\u7528Gamma 2.2 \u66f2\u7dda\uff1b\u76ee\u6a19 a*,b*\u5247\u6cbf\u7528G7 \u898f\u5247\u3002<\/p>\n\n\n\n

\u9019\u4e00\u6b21\u5728\u4e00\u500b\u5674\u58a8\u5370\u8868\u6a5f\u6e2c\u8a66\uff0c\u76f4\u63a5\u7531RGB driver \u5217\u5370\u3002<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Fig. \u5674\u58a8\u539f\u59cb\u72c0\u614b\uff0c28\u5206\u88e1\u9762\u62ff\u52306\u5206\u3002<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Fig. \u4fee\u6b63\u5f8c\u62ff\u5230\u6eff\u5206 28\/28\u3002<\/p>\n\n\n\n

\u518d\u4e00\u500b\u6a23\u672c\u8b49\u5be6\u662f\u6709\u6548\u7684\u4fee\u6b63\uff0c\u6211\u6703\u6301\u7e8c\u5728\u5404\u7a2e\u5834\u5408\u53d6\u5f97\u6e2c\u8a66\u6a23\u672c\uff0c\u5728\u4e00\u5b9a\u7684\u6a23\u672c\u91cf\u4e4b\u5f8c\u518d\u4f86\u505a\u4e00\u6b21\u6574\u7406\u8aaa\u660e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

Finding Gray with ai \u8207\u4eba\u5de5\u667a\u80fd\u4e00\u8d77\u5c0b\u627e\u7070\u5e73\u8861 Finding Gray with ai […]<\/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-4072","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\/4072"}],"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=4072"}],"version-history":[{"count":1,"href":"https:\/\/fredkuo.idv.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4072\/revisions"}],"predecessor-version":[{"id":4099,"href":"https:\/\/fredkuo.idv.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4072\/revisions\/4099"}],"wp:attachment":[{"href":"https:\/\/fredkuo.idv.tw\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4072"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fredkuo.idv.tw\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4072"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fredkuo.idv.tw\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4072"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}