http://hdl.handle.net/11133/65 2012-03 2026-04-17T09:57:14Z http://hdl.handle.net/11133/1553 タイトル: 切土道路における振動伝搬性状 ハンマー加振実験による道路交通振動伝搬性状の把握 著者: 成瀬, 治興; 佐野, 泰之 抄録: Complaint is caused by noise and low frequency sound emitted from the natural refrigerant (CO2) heat pump water heater for residential. This problem has been reported in the news of NHK and filed in court. Have been surveys and studies to solve this problem. In this paper, we introduce these initiatives 2012-03-30T15:00:00Z http://hdl.handle.net/11133/1554 タイトル: Z^d上のランダムウォークに関する一注意 著者: 橋本, 有司 抄録: We consider the random walks on the state space Zd. It is well known that the simple random walk is recurrent for d = 1, 2 and transient for d ≧ 3 and that the non-symmetric Bernoulli random walk is transient for any d. In this paper, we consider the random walks of mixed type which are not spatially homogeneous and give the examples of recurrent random walks of this type. 2012-03-30T15:00:00Z http://hdl.handle.net/11133/1555 タイトル: DCTおよびVQを用いた画像電子透かし 著者: 柴田, 且崇; 沢田, 克敏; 中村, 栄治 抄録: This paper describes two digital watermarking methods using DCT (Discrete Cosine Transform) and VQ (Vector Quantization). A bi-level (1 bit/pixel) watermarking image has been embedded in target gray scale images. In the DCT watermarking method, DCT coefficients of target gray scale images are modified by watermarking information 1/0. In the VQ watermarking method, a VQ code book is divided to 2 groups which are assigned to watermarking information 1/0, respectively. Experiments have been carried out. The SNR (Signal to Noise Ratio) of embedded target images and the BER (Bit Error Rate) of extracted watermarking information have been studied. Our Experimental results have shown that the DCT method is superior to the VQ method. 2012-03-30T15:00:00Z http://hdl.handle.net/11133/1556 タイトル: FPGAを用いたカメラ画像からの移動物体抽出の研究 著者: 榊原, 良太; 市古, 洋平; 小林, 鷹謙; 澤田, 泰幸; 江口, 一彦 抄録: Image recognition technology is widely used in various application such as driveassist, pedestrianrecognition etc. However, real time processing is required in the most case of application. We employed FPGA (Field Programmable Gate Array) to implement image recognition algorithms for the purpose of faster operation compared to software approach. A motorcycle running on 60 km/h is captured and recognized in real time processing. 2012-03-30T15:00:00Z