Feature Extractors in .NET

Generating QR Code in .NET Feature Extractors
5.4 Feature Extractors
QR Code JIS X 0510 decoder for .net
Using Barcode Control SDK for .net framework Control to generate, create, read, scan barcode image in .net framework applications.
for face recognition [11], the extraction of facial subgraphs for head pose estimation [12], the analysis of Gabor kernels using univariate statistical techniques for discriminative region nding [13], the weighting of elastic graph nodes using quadratic optimization for authentication [14], the use of principal component analysis (PCA) to determine the importance of Gabor features [15], boosting Gabor features [9], and Gabor frequency/orientation selection using genetic algorithms [16]. A relevant work on Gabor lters for face recognition that is closely related to the research presented here is by Wiskott et al. [17]. Their work [17 21] proposes a framework for face recognition that is based on modeling human face images as labeled graph. Termed elastic bunch graph matching (EBGM), the technique has become a cornerstone in face recognition research. Each node of the graph is represented by a group of Gabor lters/wavelets (called jets ) which are used to model the intensity variations around their locations. The edges of the graph are used to model the relative location of the various jets. Since the jets represent the underlying image characteristics, it is desirable to place them on ducial points on the face. This is achieved by manually marking the locations of the facial ducial points using a small set of controlled graphs that represent general face knowledge, which represents an average geometry for the human face. In our work, a genetic algorithm is used to obtain the spatial location of the ducial points. Besides automating the process of locating these points, our work identi es spatial locations on the face image that are unique to every single person, rather than relying on an average geometry. Closely following the work of Wiskott et al., Lyons et al. [22] proposed a technique that uses Gabor lter coef cients extracted at (1) automatically located rectangular grid points or (2) manually selected image feature points. These coef cients are then used to bin face images based on sex, race, and expression. The technique relies on a combined principal component analysis (PCA) dimensionality reduction and linear discriminant analysis (LDA) classi cation over the extracted Gabor coef cients, to achieve a pooling of images. While the classi cation task is not related directly to identifying individuals from face images, this technique also demonstrates the ability of Gabor lters to extract features that can encode subtle variations on facial images, providing a basis for face identi cation.
QR Code 2d Barcode barcode library for .net
generate, create qr code none for .net projects
Gabor Filters
QR Code ISO/IEC18004 barcode library in .net
Using Barcode reader for VS .NET Control to read, scan read, scan image in VS .NET applications.
Mathematically, Gabor lters can be de ned as follows:
Bar Code decoder with .net
Using Barcode scanner for .NET Control to read, scan read, scan image in .NET applications.
(x, y) =
Add barcode for .net
using barcode integration for .net crystal control to generate, create barcode image in .net crystal applications.
1 G (x, y) S , (x, y) , 2 x y ,
Control qr code size for c#.net
to connect qrcode and qr code iso/iec18004 data, size, image with visual c# barcode sdk
QR-Code barcode library on .net
generate, create qr code none for .net projects
G (x, y) = exp
Assign qr-codes for vb.net
use .net vs 2010 qr-codes integrated todraw qr-code on vb
(x cos + y sin )2 ( x sin + y cos )2 + 2 2 2 x 2 y 2 2 2 ,
Get 2d matrix barcode on .net
use .net vs 2010 matrix barcode generator toconnect 2d barcode for .net
Gs1128 creator for .net
generate, create ean 128 barcode none in .net projects
S , (x, y) = exp {i ( x cos + y sin )} exp
Build denso qr bar code in .net
using barcode implementation for visual studio .net control to generate, create qr code iso/iec18004 image in visual studio .net applications.
VS .NET msi makeron .net
using barcode printer for .net control to generate, create msi image in .net applications.
Control code-128c size in visual c#.net
to create barcode code 128 and ansi/aim code 128 data, size, image with visual c# barcode sdk
Person-Speci c Characteristic Feature Selection for Face Recognition
Deploy data matrix ecc200 on .net
using asp.net web pages topaint data matrix 2d barcode with asp.net web,windows application
where r G (x, y) represents a Gaussian function.
Word Documents barcode encoderin word documents
use office word bar code creator topaint barcode on office word
r S , (x, y) represents a sinusoid function. r (x, y) is the spatial location where the lter is centered with respect to the image axis. r is the frequency parameter of a 2D sinusoid. r 2 represents the variance of the Gaussian (and thus the lter) along the dir speci ed direction. dir can be either x or y. The variance controls the region around the center where the lter has in uence.
Barcode Code39 maker on vb.net
using asp.net web crystal tocreate code 39 full ascii with asp.net web,windows application
From the de nition of Gabor lters, as given in Eq. (5.1), it is seen that the lters are generated by multiplying two components: a Gaussian Function G (x, y) [Eq. (5.2)] and a Sinusoid S , (x, y) [Eq. (5.3)]. The following discussions detail the two components of Eq. (5.1).
Gaussian Function
Add ean 128 barcode on .net
using .net winforms toreceive ean / ucc - 13 with asp.net web,windows application
The 2D Gaussian function de nes the spatial spread of the Gabor lter. This spread is de ned by the variance parameters of the Gaussian, along the x and y direction together with the orientation parameter . Figure 5.1a shows a 3D representation of the Gaussian mask generated with x = 10 and y = 15 and rotation angle = 0. The image in Figure 5.1b shows the region of spatial in uence of an elliptical mask on an image, where the variance in the x direction is larger than the variance in the y direction. Typically the Gaussian lter has the same variance along both the x and y directions, that is, x = y = . Under such conditions the rotation parameter does not play any role as the spread will be circular.
Control qr code size with word
qr-code size with word documents
Control ucc-128 size on visual basic.net
ucc-128 size in visual basic