1 / 4

Appendix: Digital Image Processing HW1

Appendix: Digital Image Processing HW1. Yi-Chun Wei Visual Communications Lab National Central University Mar. 2, 2012. BMP Color Palette. Color palette. Color palette. Bits number(bmp). 16 色調色盤. 4 bits. 256 色調色盤. 8 bits. 24 bits. 不使用調色盤. 32 bits. 不一定使用調色盤.

ulmer
Download Presentation

Appendix: Digital Image Processing HW1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Appendix:Digital Image Processing HW1 Yi-Chun Wei Visual Communications Lab National Central University Mar. 2, 2012

  2. BMPColor Palette Color palette Color palette Bits number(bmp) 16色調色盤 4 bits 256色調色盤 8 bits 24 bits 不使用調色盤 32 bits 不一定使用調色盤 ※24bitscolor image因點陣圖資料未壓縮所以不需使用調色盤. 32 bits color image 是否使用調色盤需由壓縮型式而定. ※24bits color image每個pixel的讀取順序為:BGR. 參考資料: http://crazycat1130.pixnet.net/blog/post/1345538#mark-5 “瘋小貓的華麗冒險”

  3. Bilinear Interpolation(1/2) (0,0) y is gray-level value x 將(1)(2) 帶入(3)後

  4. Bilinear Interpolation(2/2) ※相鄰兩點間的差距為1,因此可將(4)改寫為 化簡後 f(x , y) = Ax+ By+ Cxy+ D You have two choices: ․將內插點的鄰近四點的灰階值與座標值, 及所欲計算的內插點的座標代入(5)中,算出內插點的灰階值. ․將內插點的鄰近四點的灰階值與座標值套入(7)中做聯立解找出各係數,並利用此方程式算出內插點的灰階值.

More Related