methods for evaluation of edge detector performance can be categorized as using either synthetic or natural images, with or without specified ground truth [ 10 ], [ 12 ] 翻譯:評(píng)估邊緣檢測算法性能的方法可以被分類為:使用的是合成圖像還是自然圖像,有沒有特殊的背景。
abstract : this paper describes the classical mathematic model of bolometer, the effect of thermal isolation and noise on detector performance are also discussed 文摘:總結(jié)了非制冷測輻射熱計(jì)的經(jīng)典數(shù)學(xué)模型,并分析了探測器熱絕緣結(jié)構(gòu)和噪聲對(duì)性能的影響,指出了性能改進(jìn)和優(yōu)化的基本途徑。
first of all, by establishing the observation model of complex harmonic signal and complex linear chirp signal respectively under the co-jamming of additive and multiply noise, the paper constructed cyclic moment detectors of different orders, deduced snr expression of the detector through theoretic analysis, discussed the relation of detector performance and noise statistical characteristic . the curve of detection performance is obtained through monte carlo simulation test, proving the related conclusion derived 首先,論文分別以加性和乘性噪聲聯(lián)合干擾下的復(fù)諧波信號(hào)和復(fù)線性調(diào)頻信號(hào)為觀測模型,構(gòu)造了基于不同階次的循環(huán)矩檢測統(tǒng)計(jì)量,從理論上推導(dǎo)出了檢測器的信噪比表達(dá)式,分析了檢測器性能與噪聲統(tǒng)計(jì)特性的關(guān)系,通過monte-carlo仿真試驗(yàn)得到了檢測性能的曲線,驗(yàn)證了推導(dǎo)的有關(guān)結(jié)論。
preliminary results indicate that the standard and low electromagnetic interaction packages in geant4 give almost identical simulation on emc, the detector performance, such as energy / position resolution, satisfies requirements of physics design . different behaviors of hadrons and electrons in emc will be helpful for particle discrimination, such as e / discrimination . the complete and perfect offline simulation software will play an important role in physics study at bes 初步結(jié)果顯示:標(biāo)準(zhǔn)和低能兩種電磁相互作用模擬軟件包在bes能區(qū)給出了相同的模擬結(jié)果;探測器的運(yùn)行指標(biāo),如能量分辨率和位置分辨率,滿足物理設(shè)計(jì)指標(biāo);強(qiáng)子和電子在emc中的不同行為將會(huì)給進(jìn)一步的粒子鑒別(如e/鑒別)提供幫助;完整而完善的離線模擬軟件將在今后bes上的物理研究發(fā)揮重要作用。