針對嵌入式機器視覺系統(tǒng)向獨立化、智能化發(fā)展的要求，介紹了一種嵌入式視覺系統(tǒng)--智能相機。基于對智能相機體系結(jié)構、組成模塊和圖像采集、傳輸和處理技術的分析，對國內(nèi)外的幾款智能相機進行比較。綜合技術發(fā)展現(xiàn)狀，提出基于FPGA+DSP模式的硬件平臺，并提出智能相機的發(fā)展方向。分析結(jié)果表明，該系統(tǒng)設計可以實現(xiàn)脫離PC運行，完成圖像獲取與分析，并作出相應輸出。 Abstract: This paper introduced an embedded vision system-intelligent camera ，which was for embedded machine vision systems to an independent and intelligent development requirements. Intelligent camera architecture， component modules and image acquisition， transmission and processing technology were analyzed. After comparing integrated technology development of several intelligent cameras at home and abroad， the paper proposed the hardware platform based on FPGA+DSP models and made clear direction of development of intelligent cameras. On the analysis of the design， the results indicate that the system can run from the PC independently to complete the image acquisition and analysis and give a corresponding output.
上傳時間： 2013-11-14
上傳用戶：無聊來刷下
利用EZ-USB接口芯片AN2131Q實現(xiàn)了基于TMS320C5409的水聲信號采集及混沌特性研究系統(tǒng)中的高速數(shù)據(jù)通信，提出了一種采用FIFO緩存芯片實現(xiàn)AN2131Q與TMS320C5409的連接方法，深入研究了EZ-USB序列接口芯片的固件、設備驅(qū)動和用戶程序開發(fā)過程。關鍵詞：AN2131Q; TMS320C5409; IDT72V02；數(shù)據(jù)通信ABSTRACT: Using AN2131Q as the control chip, the communication between DSP and PC in the underwater acoustic signal acquisition and chaotic characteristics study system is realized. The method is proposed that using FIFO to realize the connectivity between AN2131Q and TMS320C5409. The development of programming Firmware、device driver and user application are thoroughly researched.Key words: AN2131Q; TMS320C5409; IDT72V02; data communication
標簽： EZ-USB 數(shù)據(jù)傳輸 接口設計
上傳時間： 2014-04-03
上傳用戶：hahayou
This scheme is initiated by Ziv and Lempel [1]. A slightly modified version is described by Storer and Szymanski [2]. An implementation using a binary tree is proposed by Bell [3]. The algorithm is quite simple: Keep a ring buffer, which initially contains "space" characters only. Read several letters from the file to the buffer. Then search the buffer for the longest string that matches the letters just read, and send its length and position in the buffer.
標簽： initiated described modified slightly
上傳時間： 2014-01-09
上傳用戶：sk5201314
GUI Ant-Miner is a tool for extracting classification rules from data. It is an updated version of a data mining algorithm called Ant-Miner (Ant Colony-based Data Miner), which was proposed in 2002 by Parpinelli, Lopes and Freitas.
標簽： classification extracting Ant-Miner updated
上傳時間： 2015-05-13
上傳用戶：ainimao
Wavelets have widely been used in many signal and image processing applications. In this paper, a new serial-parallel architecture for wavelet-based image compression is introduced. It is based on a 4-tap wavelet transform, which is realised using some FIFO memory modules implementing a pixel-level pipeline architecture to compress and decompress images. The real filter calculation over 4 · 4 window blocks is done using a tree of carry save adders to ensure the high speed processing required for many applications. The details of implementing both compressor and decompressor sub-systems are given. The primarily analysis reveals that the proposed architecture, implemented using current VLSI technologies, can process a video stream in real time.
標簽： applications processing Wavelets widely
上傳時間： 2014-01-22
上傳用戶：hongmo
The cable compensation system is an experiment system that performs simulations of partial or microgravity environments on earth. It is a highly nonlinear and complex system.In this paper, a network based on the theory of the Fuzzy Cerebellum Model Articulation Controller(FCMAC) is proposed to control this cable compensation system. In FCMAC ,without appropriate learning rate, the control system based on FCMAC will become unstable or its convergence speed will become slow.In order to guarantee the convergence of tracking error, we present a new kind of optimization based on adaptive GA for selecting learning rate.Furthermore, this approach is evaluated and its performance is discussed.The simulation results shows that performance of the FCMAC based the proposed method is stable and more effective.
標簽： system compensation simulations experiment
上傳時間： 2015-08-26
上傳用戶：希醬大魔王
DES( Data Encryption Standard)算法，于1977年得到美國政府的正式許可，是一種用56位密鑰來加密64位數(shù)據(jù)的方法。 IDEA是International Data Encryption Algorithm 的縮寫,是1990年由瑞士聯(lián)邦技術學院來學嘉X.J.Lai 和Massey提出的建議標準算法稱作PES( proposed Encryption Standard) 。Lai 和Massey 在1992 年進行了改進強化了抗差分分析的能力改稱為IDEA 它也是對64bit大小的數(shù)據(jù)塊加密的分組加密算法密鑰長度為128位它基于“相異代數(shù)群上的混合運算”設計思想算法用硬件和軟件實現(xiàn)都很容易且比DES在實現(xiàn)上快的多。IDEA自問世以來，已經(jīng)經(jīng)歷了大量的詳細審查，對密碼分析具有很強的抵抗能力，在多種商業(yè)產(chǎn)品中被使用。
標簽： Encryption Standard Data DES
上傳時間： 2015-08-27
上傳用戶：Avoid98
A new blind adaptive multiuser detection scheme based on a hybrid of Kalman filter and subspace estimation is proposed. It is shown that the detector can be expressed as an anchored signal in the signal subspace and the coefficients can be estimated by the Kalman filter using only the signature waveform and the timing of the desired user.
標簽： multiuser detection adaptive subspace
上傳時間： 2015-09-07
上傳用戶：xieguodong1234
A fast approach to the detection and correction of skew documentsIn this paper, a fast approach is proposed to detect and correct skew documents.
標簽： approach fast documentsIn correction
上傳時間： 2015-09-19
上傳用戶：yiwen213
Robustnesstochangesinilluminationconditionsaswellas viewing perspectives is an important requirement formany computer vision applications. One of the key fac-ors in enhancing the robustness of dynamic scene analy-sis that of accurate and reliable means for shadow de-ection. Shadowdetectioniscriticalforcorrectobjectde-ection in image sequences. Many algorithms have beenproposed in the literature that deal with shadows. How-ever,acomparativeevaluationoftheexistingapproachesisstill lacking. In this paper, the full range of problems un-derlyingtheshadowdetectionareidenti?edanddiscussed.Weclassifytheproposedsolutionstothisproblemusingaaxonomyoffourmainclasses, calleddeterministicmodeland non-model based and statistical parametric and non-parametric. Novelquantitative(detectionanddiscrimina-ionaccuracy)andqualitativemetrics(sceneandobjectin-dependence,?exibilitytoshadowsituationsandrobustnesso noise) are proposed to evaluate these classes of algo-rithms on a benchmark suite of indoor and outdoor videosequences.
標簽： Robustnesstochangesinillumination conditionsaswellas perspectives requirement
上傳時間： 2014-01-23
上傳用戶：whenfly
