标签: c2h

C2H技术在视频监控系统中的应用

图像增强是自动指纹识别系统中非常关键的部分,直接影响指纹识别的效果.本文实现了利用Gabor滤波器对指纹图像增强的算法,并通过FPGA对该算法进行硬件加速,实现了高速的指纹图像增强.实践表明,该方法能大幅度提高指纹图像质量,并大大缩短指纹预处理的时间.……

【应用笔记】AN417:采用C2H编译器加速功能实现DMA散射收集校验(AcceleratingFunctionswiththeC2HCompiler:Scatter-GatherDMAwithChecksum)NiosIIC2H编译器是一个将软件功能函数生成硬件加速器的强大工具。TheNios®IIC-to-HardwareAcceleration(C2H)Compilerisapowerfultoolthatgenerateshardwareacceleratorsforsoftwarefunctions.ThisapplicationnoteusestheC2HCompilertomapCcodeforascatter-gatherdirectmemoryaccess(DMA)functiontoequivalenthardware.ThehardwareacceleratorprovidesdatatoanInternetchecksumfunction.ReferencefilesincludedwiththeapplicationnoteprovideCcodetoimplementthescatter-gatherDMAandthechecksum.Therearetwoversionsofthechecksumcode:ThefirstrunsassoftwareontheNiosIIprocessor.Thesecondbecomesahardwareaccelerator,replacingtheCcodewithequivalentlogicintheFPGA.Thespeedupforthehardwareversionistypicallymorethantwoordersofmagnitude.TheexactspeedupdependsonthetargetFPGA.AcceleratingFunctionswiththeC2HCompiler:Scatter-GatherDMAwithChecksumMay2006,Version6.0ApplicationNoteIntroductionTheNiosIIC-to-HardwareAcceleration(C2H)Compilerisapowerfultoolthatgenerateshardwareacceleratorsforsoftwarefunctions.ThisapplicationnoteusestheC2HCompilertomapCcodeforascatter-gatherdirectmemoryaccess(DMA)functiontoequivalenthardware.ThehardwareacceleratorprovidesdatatoanInternetchecksumfunction.Referencefilesi……

【应用笔记】AN531:使用硬件加速器降低功耗(AN531:ReducingPowerwithHardwareAccelerators)在使用FPGA的嵌入式产品中降低功耗越来越重要，特别是对于电池供电的应用、减少发热或成本等。ReducingpowerconsumptioninembeddedproductsthatuseFPGAsisincreasinglyimportant,particularlyforbattery-poweredapplicationsortoreduceheatorcost.YoucanuseparallelalgorithmstoexploittheparallelarchitectureofFPGAdevicestoaccomplishmoreworkperclockcycle,allowingyoutolowertheclockfrequency.High-leveldevelopmenttoolssuchasSOPCBuilderandtheNios®IIC-to-HardwareAccelerationCompiler(C2H)canhelpyouusethepower-savingpotentialoftheFPGAhardwarebyeasilyaddinghardwareacceleratorsandloweringclockfrequencies.AN531:ReducingPowerwithHardwareAcceleratorsMay2008,ver.1.0ApplicationNote531IntroductionReducingpowerconsumptioninembeddedproductsthatuseFPGAsisincreasinglyimportant,particularlyforbattery-poweredapplicationsortoreduceheatorcost.YoucanuseparallelalgorithmstoexploittheparallelarchitectureofFPGAdevicestoaccomplishmoreworkperclockcycle,allowingyoutolowertheclockfrequency.High-leveldevelopmenttoolssuchasSOPCBuilderandtheNiosIIC-to-HardwareAcceleration……