sfrmat is a Matlab function that provides a spatial frequency response* (SFR) from a digital image file containing a slanted-edge feature. The specific edge-gradient algorithm follows the intent of the standard ISO 12233, developed by Technical Committee ISI/TC 42, for resolution measurements for electronic still pictorial cameras.
標簽： frequency function provides response
上傳時間： 2014-01-20
上傳用戶：qunquan
(2003 prentice-hall)verilog hdl：a guide to digital design and synthesis(2nd edition).rar
標簽： prentice-hall synthesis digital edition
上傳時間： 2014-01-17
上傳用戶：teddysha
This example code takes and averages 2048 analog measurements from input P1.4 using ADC0, then prints the results to a terminal window via the UART.
標簽： measurements averages example analog
上傳時間： 2016-06-13
上傳用戶：xuan‘nian
For C8051F330 This code example illustrates using the internal analog multiplexer to measure analog voltages on up to 8 different analog inputs. Results are printed to a PC terminal program via the UART.
標簽： analog illustrates multiplexer C8051F330
上傳時間： 2014-12-20
上傳用戶：aig85
this book mainly shows us how to process digital inmages by Visual C
標簽： digital inmages process Visual
上傳時間： 2014-01-02
上傳用戶：cx111111
Analog Devices長沙太陽人電子有限公司//長沙太陽人電子有限公司二線式串行接口C51測試程序(for SMS0408) //電話: 0731-4167806,4167808 //E-mail: www@sunman.cn //Create by : 譚超 E-mail: tanchao_1@126.com
標簽： 4167806 4167808 Devices Analog
上傳時間： 2016-07-06
上傳用戶：myworkpost
Digital Signal and Image Processing Using MATLAB The most important theoretical aspects of image and signal processing (ISP) for both deterministic and random signals are covered in this guide to using MATLAB® . The discussion is also supported by exercises and computer simulations relating to real applications such as speech processing and fetal-heart–rhythm tracking, and more than 200 programs and functions for numerical experiments are provided with commentary.
標簽： theoretical Processing important Digital
上傳時間： 2016-07-08
上傳用戶：z1191176801
document about the digital signal processing,detailedly introduce how to design the filters including the FIR and IIR filters
標簽： detailedly processing the introduce
上傳時間： 2016-07-09
上傳用戶：zhoujunzhen
Digital Output in NI-DAQmx using Visual Basic 6.0
標簽： NI-DAQmx Digital Output Visual
上傳時間： 2016-07-11
上傳用戶：yzhl1988
Digital Signature Algorithm (DSA)是Schnorr和ElGamal簽名算法的變種，被美國NIST作為DSS(DigitalSignature Standard)。算法中應用了下述參數： p：L bits長的素數。L是64的倍數，范圍是512到1024； q：p - 1的160bits的素因子； g：g = h^((p-1)/q) mod p，h滿足h < p - 1, h^((p-1)/q) mod p > 1； x：x < q，x為私鑰 ； y：y = g^x mod p ，( p, q, g, y )為公鑰； H( x )：One-Way Hash函數。DSS中選用SHA( Secure Hash Algorithm )。 p, q, g可由一組用戶共享，但在實際應用中，使用公共模數可能會帶來一定的威脅。簽名及驗證協議如下： 1. P產生隨機數k，k < q； 2. P計算 r = ( g^k mod p ) mod q s = ( k^(-1) (H(m) + xr)) mod q 簽名結果是( m, r, s )。 3. 驗證時計算 w = s^(-1)mod q u1 = ( H( m ) * w ) mod q u2 = ( r * w ) mod q v = (( g^u1 * y^u2 ) mod p ) mod q 若v = r，則認為簽名有效。 DSA是基于整數有限域離散對數難題的，其安全性與RSA相比差不多。DSA的一個重要特點是兩個素數公開，這樣，當使用別人的p和q時，即使不知道私鑰，你也能確認它們是否是隨機產生的，還是作了手腳。RSA算法卻作不到。
標簽： Algorithm Signature Digital Schnorr
上傳時間： 2014-01-01
上傳用戶：qq521
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