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It has continued for a week!! >"<.
Selected Category: Study (8)
- Oct 30 Fri 2009 06:05
Wake up at 5 A.M.
- Oct 28 Wed 2009 15:18
Do you like to express your opinions to other? Why or why not?
I like to express my opinion because I think it’s a good way to communicate. If you never express your opinion, none can know where you stand. They may guess what you thought, but they may misunderstand.
Although some opinion is embarrassing to convey, there may be an opportunity for us to practice the expression ability. There are always different opinions between people, so it’s unavoidable to exchange our opinions or just to follow other’s suggestion; even so it’s quite important to know other people’s points of view.
Although some opinion is embarrassing to convey, there may be an opportunity for us to practice the expression ability. There are always different opinions between people, so it’s unavoidable to exchange our opinions or just to follow other’s suggestion; even so it’s quite important to know other people’s points of view.
- Oct 10 Fri 2008 10:43
影像相關的網站
- Oct 10 Fri 2008 10:38
專利搜尋
- Oct 10 Fri 2008 10:33
Mr.OH!數位攝影講座
- Oct 10 Fri 2008 10:28
Matlab教學網站
- Jan 30 Wed 2008 19:49
Matlab: big-endian & little-endian
今天想要用Matlab讀取16-bit Raw轉成8-bit Raw時遇到一個問題
就是讀檔一直出現問題
影像的輪廓對了,可是每一個pixel的值像是錯亂了一樣
一張影像變成像是電視訊號出了問題的麻點
後來才知道原來是因為fread預設的讀取方式是little-endian
可是手邊的16-bit Raw不巧的是以big-endian 的方式存取
所以才會造成影像的值出了錯
不過沒有資訊背景的我還是第一次知道這個東西耶
兩個差別在於一個是從高位元讀取,一個從低位元讀取
little endian的8是1000
big-endian的8是0001
Matlab寫法分別為:
fread(fid,'uint16', 'ieee-be') :big-endian
fread(fid,'uint16', 'ieee-le') :little-endian
感謝秀大教學呀 ^o^ .
就是讀檔一直出現問題
影像的輪廓對了,可是每一個pixel的值像是錯亂了一樣
一張影像變成像是電視訊號出了問題的麻點
後來才知道原來是因為fread預設的讀取方式是little-endian
可是手邊的16-bit Raw不巧的是以big-endian 的方式存取
所以才會造成影像的值出了錯
不過沒有資訊背景的我還是第一次知道這個東西耶
兩個差別在於一個是從高位元讀取,一個從低位元讀取
little endian的8是1000
big-endian的8是0001
Matlab寫法分別為:
fread(fid,'uint16', 'ieee-be') :big-endian
fread(fid,'uint16', 'ieee-le') :little-endian
感謝秀大教學呀 ^o^ .
- Apr 05 Thu 2007 19:59
Matlab: 設定Jpg壓縮比
Matlab Help只寫了:
Quality:A number between 0 and 100; this parameter applies only if 'Compression' is 'jpeg'. Higher numbers mean higher quality (less image degradation due to compression), but the resulting file size is larger.
Default:75
卻不知道參數要怎麼設定
原來是這樣:
imwrite(imgA,filename,'Quality', 95);
Quality:A number between 0 and 100; this parameter applies only if 'Compression' is 'jpeg'. Higher numbers mean higher quality (less image degradation due to compression), but the resulting file size is larger.
Default:75
卻不知道參數要怎麼設定
原來是這樣:
imwrite(imgA,filename,'Quality', 95);
