Machine Vision and Applications

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Extrinsic calibration of multi-modal sensor arrangements with non-overlapping field-of-view
Machine Vision and Applications - Tập 28 - Trang 141-155 - 2016
Carolina Raposo, João Pedro Barreto, Urbano Nunes
Several applications in robotics require complex sensor arrangements that must be carefully calibrated, both intrinsically and extrinsically, to allow information fusion and enable the system to function as a whole. These arrangements can combine different sensing modalities—such as color cameras, laser-rangefinders, and depth cameras—in an attempt to obtain richer descriptions of the environment....... hiện toàn bộ
A robust eye gaze tracking method based on a virtual eyeball model
Machine Vision and Applications - Tập 20 - Trang 319-337 - 2008
Eui Chul Lee, Kang Ryoung Park
Gaze positions can provide important cues for natural computer interfaces. In this paper, we describe a new gaze estimation method based on a three dimensional analysis of the human eye which can be used in head-mounted display (HMD) environments. This paper presents four advantages over previous works. First, in order to obtain accurate gaze positions, we used a virtual eyeball model based on the...... hiện toàn bộ
Extended sparse representation-based classification method for face recognition
Machine Vision and Applications - Tập 29 - Trang 991-1007 - 2018
Yali Peng, Lingjun Li, Shigang Liu, Jun Li, Xili Wang
In sparse representation algorithms, a test sample can be sufficiently represented by exploiting only the training samples from the same class. However, due to variations of facial expressions, illuminations and poses, the other classes also have different degrees of influence on the linear representation of the test sample. Therefore, in order to represent a test sample more accurately, we propos...... hiện toàn bộ
Realistic human action recognition by Fast HOG3D and self-organization feature map
Machine Vision and Applications - Tập 25 - Trang 1793-1812 - 2014
Nijun Li, Xu Cheng, Suofei Zhang, Zhenyang Wu
Nowadays, local features are very popular in vision-based human action recognition, especially in “wild” or unconstrained videos. This paper proposes a novel framework that combines Fast HOG3D and self-organization feature map (SOM) network for action recognition from unconstrained videos, bypassing the demanding preprocessing such as human detection, tracking or contour extraction. The contributi...... hiện toàn bộ
A real-time vision system using an integrated memory array processor prototype
Machine Vision and Applications - Tập 7 - Trang 220-228 - 1994
Yoshihiro Fujita, Nobuyuki Yamashita, Shin'ichiro Okazaki
This paper describes a real-time vision system (RVS) architecture and performance and its use of an integrated memory array processor (IMAP) prototype. This prototype integrates eight 8-bit processors and a 144-kbit SRAM on a single chip. The RVS was developed with 64 IMAP prototypes connected in series in a 512 processor-system configuration. A host workstation can access the memory on the IMAP p...... hiện toàn bộ
A robust facial feature detection on mobile robot platform
Machine Vision and Applications - Tập 21 Số 6 - Trang 981-988 - 2010
Park, Chang-Woo, Lee, Taigun
Human face analysis on the mobile robot vision system should cope with difficult problems such as face pose variations, illumination changes, and complex backgrounds, in which problems are mainly induced from the movement of its platform. In this paper, in order to overcome such problems, an efficient facial feature detection approach based on local image region and direct pixel-intensity distribu...... hiện toàn bộ
Wound measurement by RGB-D camera
Machine Vision and Applications - Tập 29 - Trang 633-654 - 2018
Damir Filko, Robert Cupec, Emmanuel Karlo Nyarko
The robot and computer vision community has seen a lot of novelties developed in the past few years as a result of the appearance of cheap RGB-D sensors spearheaded by the Kinect sensor. In this paper, the feasibility of using an RGB-D camera in detecting, segmenting, reconstructing and measuring chronic wounds in 3D is explored. The wound is detected by implementing nearest-neighbor approach on c...... hiện toàn bộ
A gradient fusion-based image data augmentation method for reflective workpieces detection under small size datasets
Machine Vision and Applications - - 2024
Baori Zhang, Haogang Cai, Lingxiang Wen
A robust multilevel segment description for multi-class object recognition
Machine Vision and Applications - Tập 26 - Trang 15-30 - 2014
Mohammadreza Mostajabi, Iman Gholampour
We present an attempt to improve the performance of multi-class image segmentation systems based on a multilevel description of segments. The multi-class image segmentation system used in this paper marks the segments in an image, describes the segments via multilevel feature vectors and passes the vectors to a multi-class object classifier. The focus of this paper is on the segment description se...... hiện toàn bộ
Analog computation for phase-based disparity estimation: continuous and discrete models
Machine Vision and Applications - Tập 11 - Trang 83-95 - 1998
Bruno Crespi, Alex G. Cozzi, Luigi Raffo, Silvio Sabatini
The analog implementation of a phase-based technique for disparity estimation is discussed. This technique is based on the convolution of images with Gabor filters. The article shows that by replacing the Gaussian envelope with other envelopes, the convolution operation is equivalent to the solution of a system of differential equations, whose order is related to the smoothness of the kernel. A d...... hiện toàn bộ
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