cc=imread（‘ASA_IMP_2447_huangxing.jpg‘）;
aa=imread（‘ASA_IMP_2447_zhanglixiang.jpg‘）;%讀取圖像
bb=imread（‘ASA_IMP_2447_yuyang.jpg‘）;

figure（1）;
imshow（aa）
aa=double（aa）/255;
figure（2）
imshow（aa）

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-10-13?22:43??代碼\
?????目錄???????????0??2017-10-13?22:42??代碼\CNN_sar_farmland_identification\
?????文件?????5339140??2016-04-19?18:21??代碼\CNN_sar_farmland_identification\（huang?xing）ASA_suo_IMP_42857_2447.jpg
?????文件??????114296??2017-02-27?18:41??代碼\CNN_sar_farmland_identification\ASA_IMP_2447_huangxing.jpg
?????文件??????111594??2017-02-27?19:04??代碼\CNN_sar_farmland_identification\ASA_IMP_2447_yuyang.jpg
?????文件??????113270??2017-02-27?18:49??代碼\CNN_sar_farmland_identification\ASA_IMP_2447_zhanglixiang.jpg
?????文件????????4412??2017-09-27?22:45??代碼\CNN_sar_farmland_identification\CNN_Setup.m
?????文件????????1050??2017-09-27?23:07??代碼\CNN_sar_farmland_identification\CNN_applygrads.m
?????文件????????3351??2017-09-27?23:10??代碼\CNN_sar_farmland_identification\CNN_bp.m
?????文件????????2532??2017-09-27?23:01??代碼\CNN_sar_farmland_identification\CNN_ff.m
?????文件?????????484??2017-09-21?23:47??代碼\CNN_sar_farmland_identification\CNN_test.m
?????文件????????1287??2017-09-21?20:32??代碼\CNN_sar_farmland_identification\CNN_train.m
?????文件????????1915??2017-10-12?23:26??代碼\CNN_sar_farmland_identification\Untitled1.m
?????文件??????813410??2017-10-13?17:39??代碼\CNN_sar_farmland_identification\classdata.mat
?????文件????????4464??2017-10-13?17:37??代碼\CNN_sar_farmland_identification\classfication_shuju.m
?????文件????????2644??2017-10-13?18:27??代碼\CNN_sar_farmland_identification\cnn_sar_identification.m
?????文件???????16845??2017-09-18?22:50??代碼\CNN_sar_farmland_identification\dev_shuju.m
?????文件???????33649??2017-09-18?22:50??代碼\CNN_sar_farmland_identification\devdata.mat
?????文件??????361248??2017-10-13?17:02??代碼\CNN_sar_farmland_identification\shuju.mat
?????文件???????23060??2017-10-13?17:12??代碼\CNN_sar_farmland_identification\train_shuju.m
?????文件??????199159??2017-10-13?17:12??代碼\CNN_sar_farmland_identification\traindata.mat
?????文件????????1751??2017-10-13?17:40??代碼\CNN_sar_farmland_identification\yuchuli.m
?????目錄???????????0??2017-10-13?22:43??代碼\SAR_farmland_identification\
?????文件?????5339140??2016-04-19?18:21??代碼\SAR_farmland_identification\（huang?xing）ASA_suo_IMP_42857_2447.jpg
?????文件??????114296??2017-02-27?18:41??代碼\SAR_farmland_identification\ASA_IMP_2447_huangxing.jpg
?????文件??????111594??2017-02-27?19:04??代碼\SAR_farmland_identification\ASA_IMP_2447_yuyang.jpg
?????文件??????113270??2017-02-27?18:49??代碼\SAR_farmland_identification\ASA_IMP_2447_zhanglixiang.jpg
?????文件????????3912??2017-10-06?23:09??代碼\SAR_farmland_identification\CNN_Setup.m
?????文件????????1029??2017-10-07?01:03??代碼\SAR_farmland_identification\CNN_applygrads.m
?????文件????????3483??2017-10-07?16:18??代碼\SAR_farmland_identification\CNN_bp.m
?????文件????????2686??2017-10-06?23:42??代碼\SAR_farmland_identification\CNN_ff.m
............此處省略37個文件信息