The Journal of the Institute of Image Electronics Engineers of Japan最新文献_第4页

Lung Cancer Detection from X-ray CT Scans Using Discriminant Filters and View-based Support Vector Machine 基于判别滤波器和基于视图的支持向量机的x射线CT扫描肺癌检测

The Journal of the Institute of Image Electronics Engineers of Japan Pub Date : 2011-01-25 DOI: 10.11371/IIEEJ.40.59

H. Takizawa, H. Nishizako

引用次数: 2

Real-Time Line Drawing of 3D Models Taking into Account Curvature-Based Importance 考虑曲率重要性的三维模型实时线条绘制

The Journal of the Institute of Image Electronics Engineers of Japan Pub Date : 2011-01-25 DOI: 10.11371/IIEEJ.40.105

Shohei Wada, H. Johan, Pablo Garcia Trigo, T. Nishita

引用次数: 0

Evaluation Method of Visual Induced Motion Sickness by Interactive Video Using Time-Variant Biosignals 基于时变生物信号的交互式视频视动病评价方法

The Journal of the Institute of Image Electronics Engineers of Japan Pub Date : 2011-01-25 DOI: 10.11371/IIEEJ.40.159

Naoki Kobayashi, Masami Hamada, S. Ochiai, Daisuke Nagamine

引用次数: 5

Restoration for JPEG and Blurred Images Based on Ensemble Learning Algorithm 基于集成学习算法的JPEG和模糊图像复原

The Journal of the Institute of Image Electronics Engineers of Japan Pub Date : 2011-01-25 DOI: 10.11371/IIEEJ.40.42

E. Watanabe, T. Ozeki, T. Kohama

引用次数: 0

New Approaches for Highly Accurate Detection of Scaling-Change Center Positions and for Precise Scaling Correction of Scaling-Changed Images 高精度检测缩放变化中心位置和精确缩放校正缩放变化图像的新方法

The Journal of the Institute of Image Electronics Engineers of Japan Pub Date : 2011-01-25 DOI: 10.11371/IIEEJ.40.24

Kouhei Saito, Katsuya Sakaguchi, Nami Inadomi, Minoru Ito

{"title":"New Approaches for Highly Accurate Detection of Scaling-Change Center Positions and for Precise Scaling Correction of Scaling-Changed Images","authors":"Kouhei Saito, Katsuya Sakaguchi, Nami Inadomi, Minoru Ito","doi":"10.11371/IIEEJ.40.24","DOIUrl":"https://doi.org/10.11371/IIEEJ.40.24","url":null,"abstract":"〈Summary〉 This paper describes a new approach for accurately detecting scaling-change center positions of slightly scaling-changed images and also proposes a new technique for correcting the scaling changes. These approaches utilize the phase difference spectrum analysis approach for detecting image shifts and the technique for detecting scaling factors, without iterative approximation calculation. In experiments, three types of image patterns were used. When the position is within a few ten pixels from the image center, the detection accuracy of the scaling-change center position is 2.2 pixels on average and as high as 1.1 pixels, excluding errors for scaling-factor changes below ±0.6%. The correction accuracy for scaling factors is almost completely independent of the scaling-center position and is about 0.0004 on average. The pixel displacement of the corrected image from the reference image is about 0.012 pixels on average when the scaling-change center position is within a few ten pixels from the image center. From these results, it is clear that the proposed approaches, despite their simplicity, make it possible to detect scaling-change center positions for scaling-changed images and to correct the images with high accuracy and reliability.","PeriodicalId":153591,"journal":{"name":"The Journal of the Institute of Image Electronics Engineers of Japan","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132303123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CFA Interpolation with Flexible Filtering Masks using Unified High-Frequency Map 使用统一高频地图的灵活滤波掩模的CFA插值

The Journal of the Institute of Image Electronics Engineers of Japan Pub Date : 2011-01-25 DOI: 10.11371/IIEEJ.40.182

Yuji Itoh

引用次数: 0

Deterministic Blue Noise Sampling by Solving Largest Empty Circle Problems 求解最大空圆问题的确定性蓝噪声采样

The Journal of the Institute of Image Electronics Engineers of Japan Pub Date : 2011-01-25 DOI: 10.11371/IIEEJ.40.6

Yoshihiro Kanamori, Zoltan Szego, T. Nishita

引用次数: 6

Proposal and Implementation of Virtual Chinkin 虚拟Chinkin的提出与实现

The Journal of the Institute of Image Electronics Engineers of Japan Pub Date : 2011-01-25 DOI: 10.11371/IIEEJ.40.132

S. Mizuno

引用次数: 0

Fast Inter Mode Decision Algorithm Based on Residual Feature 基于残差特征的快速模式间决策算法

The Journal of the Institute of Image Electronics Engineers of Japan Pub Date : 2010-09-25 DOI: 10.11371/IIEEJ.39.663

Chen Liu, T. Zhang, Xin Jin, Minghui Wang, S. Goto

{"title":"Fast Inter Mode Decision Algorithm Based on Residual Feature","authors":"Chen Liu, T. Zhang, Xin Jin, Minghui Wang, S. Goto","doi":"10.11371/IIEEJ.39.663","DOIUrl":"https://doi.org/10.11371/IIEEJ.39.663","url":null,"abstract":"〈Summary〉 H.264/AVC introduces the variable block size motion estimation (VBSME), which brings huge computational cost of the encoder. In this paper, a novel fast inter mode decision algorithm for H.264/AVC has been proposed. The proposed algorithm evaluates the modes based on residual feature. The residual is obtained after the motion search of P16 × 16 mode or P8 × 8 mode. And then basing on the extracted residual feature, the complexity and similarity are evaluated for the inter mode decision. According to the evaluation of similarity between different sub-blocks and the complexity of each sub-block, the most possible inter modes for current block is chosen to be conducted. In the worst case, the proposed whole scheme of inter mode decision algorithm only conducts 4 modes, which is much more effective than conducting all the 8 modes in conventional approach. The simulation results show that, comparing to JM14.1, on average, the proposed algorithm achieves 57.98% and 55.72% time-saving on CIF and 720p sequences respectively, with equivalent 0.219 dB PSNR drop and 5.55% bit rate increase for CIF and 0.107 dB PSNR drop and 3.53% bit rate increase for 720p. Compared to existing inter mode decision algorithm, proposed algorithm achieves 10.68% and 13.26% timing-reduction on CIF and 720p sequences respectively with less performance loss.","PeriodicalId":153591,"journal":{"name":"The Journal of the Institute of Image Electronics Engineers of Japan","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124908167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A Macroblock Homogeneity Detection Method and its Application for Block Size Decision in H.264/AVC H.264/AVC中宏块均匀性检测方法及其在块大小决定中的应用

The Journal of the Institute of Image Electronics Engineers of Japan Pub Date : 2010-09-25 DOI: 10.11371/IIEEJ.39.672

G. Tian, T. Zhang, S. Goto

{"title":"A Macroblock Homogeneity Detection Method and its Application for Block Size Decision in H.264/AVC","authors":"G. Tian, T. Zhang, S. Goto","doi":"10.11371/IIEEJ.39.672","DOIUrl":"https://doi.org/10.11371/IIEEJ.39.672","url":null,"abstract":"〈 Summary 〉 The variable block sizes for intra and inter coding in H.264/AVC achieves signiﬁcant coding gain compared with coding a macroblock (MB) with ﬁxed size. How-ever, extremely heavy computational burden is required when Rate Distortion Optimization (RDO) process runs in brutal force searching manner for selecting the optimal coding block. This paper proposes an MB homogeneity detection method to accelerate H.264/AVC intra and inter coding. All the luminance values of pixels in an MB are taken to calculate their entropy feature, which is deﬁned as MB’s spatial homogeneity. Based on homogeneity judgment, 16 × 16 or 4 × 4 block size is appropriately selected for intra coding; Meanwhile, either the large blocks in { 16 × 16 , 16 × 8 , 8 × 16 } or sub-blocks in { 8 × 8 , 8 × 4 , 4 × 8 , 4 × 4 } are chosen for inter coding. Especially, a cost function is deﬁned to select near optimal threshold for selecting optimal block size. Proposed methods are veriﬁed on a wide range of video sequences with diﬀerent spatial-/motion characteristics. Suﬃcient simulations demonstrate that consistent encoding gain is achieved for all videos with diﬀerent motion and spatial features. Encoding complexity for intra coding alone can be reduced by 31%– 34% and time savings for inter mode decision is 43.7%–58.7%, both with negligible loss in bitrate and PSNR.","PeriodicalId":153591,"journal":{"name":"The Journal of the Institute of Image Electronics Engineers of Japan","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133826663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2