Location:
Search - lighting image
Search list
Description: 白平衡算法，通过HSV模型对图像进行三通道灰度分析，得到图像的白平衡，可用于不均匀照明下的图像校正。-White balance algorithm, through the HSV model is three-channel gray-scale image analysis, the white balance to be images that can be used under uneven lighting image correction.
Platform: |
Size: 210944 |
Author: ywy |
Hits:
Description: 图像的同态滤波属于图像频率域处理范畴,其作用是对图像灰 度范围进行调整,通过消除图像上照明不均的问题,增强暗区的图像细节, 同时又不损失亮区的图像细节. -Homomorphic filtering images belong to the image frequency domain processing areas, and its role is to adjust the scope of gray-scale images, by removing images of uneven lighting issues, enhance the dark area of the image detail without loss of image detail bright areas.
Platform: |
Size: 47104 |
Author: lulin |
Hits:
Description: We propose a novel approach for head tracking, which combines particle filters with Isomap. The particle filter works on the low-dimensional embedding of training images. It indexes into the Isomap with its state variables to find the closest template for each particle. The most weighted particle approximates the location of head. We develop a synthetic video sequence to test our technique. The results we get show that the tracker tracks the head which changes position, poses and lighting conditions. -We propose a novel approach for head tracking, which combines particle filters with Isomap. The particle filter works on the low-dimensional embedding of training images. It indexes into the Isomap with its state variables to find the closest template for each particle. The most weighted particle approximates the location of head. We develop a synthetic video sequence to test our technique. The results we get show that the tracker tracks the head which changes position, poses and lighting conditions.
Platform: |
Size: 176128 |
Author: 阳关 |
Hits:
Description: image processing VB
Changed Lighten/Darken to Adjust Brightness
- Added progress bar and save option (due to demands)
- Added new adjustment : Color Balance
- Added new filters : Diffuse, Emboss, Lighting Effects, Sharpen, and Solarize
Platform: |
Size: 101376 |
Author: som |
Hits:
Description: This code implement method described in paper Enhanced Local Texture Feature Sets for Face Recognition under Difficult Lighting Conditions
Platform: |
Size: 52224 |
Author: bach |
Hits:
Description: This submission contains a function that computes face normal data for the VertexNormals property of the surface that fixes the lighting (facenorm.m) as well as a workaround function that you can just use in place of surf (surfo.m).
Only use this if you get erroneous surface plots and you can t go without OpenGL and flat lighting.-This submission contains a function that computes face normal data for the VertexNormals property of the surface that fixes the lighting (facenorm.m) as well as a workaround function that you can just use in place of surf (surfo.m).
Only use this if you get erroneous surface plots and you can t go without OpenGL and flat lighting.
Platform: |
Size: 3072 |
Author: ragada |
Hits:
Description: 图像处理范例：亮化，锐化，平滑-Image Processing Examples: lighting, sharpening, smoothing
Platform: |
Size: 1447936 |
Author: Jerry |
Hits:
Description: 一种车牌号码图像二值化的新方法。利用数学形态学的开运算消除图像光照不均匀影响，根据欧几里得距离确定图像阈值。-Of a license plate number of the new image binarization method. Using mathematical morphology opening operation to eliminate uneven lighting image effects, according to Euclidean distance to determine the image threshold.
Platform: |
Size: 373760 |
Author: morris |
Hits:
Description: OpenGL编程指南第六版 ,英文电子书pdf格式-he OpenGL? Programming Guide, Sixth Edition, provides definitive and comprehensive information on OpenGL and the OpenGL Utility Library. The previous edition covered OpenGL through Version 2.0. This sixth edition of the best-selling "red book" describes the latest features of OpenGL Version 2.1. You will find clear explanations of OpenGL functionality and many basic computer graphics techniques, such as building and rendering 3D models interactively viewing objects from different perspective points and using shading, lighting, and texturing effects for greater realism. In addition, this book provides in-depth coverage of advanced techniques, including texture mapping, antialiasing, fog and atmospheric effects, NURBS, image processing, and more. The text also explores other key topics such as enhancing performance, OpenGL extensions, and cross-platform techniques.
Using server-side pixel buffer objects for fast pixel rectangle download and retrieval
Discussion of the sRGB texture f
Platform: |
Size: 15385600 |
Author: 陆天华 |
Hits:
Description: Abstract—This paper proposes a new technique for face detection
and lip feature extraction. A real-time field-programmable
gate array (FPGA) implementation of the two proposed techniques
is also presented. Face detection is based on a naive Bayes classifier
that classifies an edge-extracted representation of an image. Using
edge representation significantly reduces the model’s size to only
5184 B, which is 2417 times smaller than a comparable statistical
modeling technique, while achieving an 86.6 correct detection
rate under various lighting conditions. Lip feature extraction uses
the contrast around the lip contour to extract the height and width
of the mouth, metrics that are useful for speech filtering. The
proposed FPGA system occupies only 15 050 logic cells, or about
six times less than a current comparable FPGA face detection
system.-Abstract—This paper proposes a new technique for face detection
and lip feature extraction. A real-time field-programmable
gate array (FPGA) implementation of the two proposed techniques
is also presented. Face detection is based on a naive Bayes classifier
that classifies an edge-extracted representation of an image. Using
edge representation significantly reduces the model’s size to only
5184 B, which is 2417 times smaller than a comparable statistical
modeling technique, while achieving an 86.6 correct detection
rate under various lighting conditions. Lip feature extraction uses
the contrast around the lip contour to extract the height and width
of the mouth, metrics that are useful for speech filtering. The
proposed FPGA system occupies only 15 050 logic cells, or about
six times less than a current comparable FPGA face detection
system.
Platform: |
Size: 28409856 |
Author: ramanaidu |
Hits:
Description: This a software utility. It provides auto attendance management system using face detection technique. Now a day’s many utilities provide face detection system but not intelligent. Our project is more intelligent, cost less and very easy to configure anywhere.
Human face detection is the most important process in applications such as video surveillance, human computer interface, face recognition, and image database management. Face detection algorithms have primary factors that decrease a detection ratio : variation by lighting effect, location and rotation, distance of object, complex background. Due to variations in illumination, background, visual angle and facial expressions, the problem of machine face detection is complex. -This is a software utility. It provides auto attendance management system using face detection technique. Now a day’s many utilities provide face detection system but not intelligent. Our project is more intelligent, cost less and very easy to configure anywhere.
Human face detection is the most important process in applications such as video surveillance, human computer interface, face recognition, and image database management. Face detection algorithms have primary factors that decrease a detection ratio : variation by lighting effect, location and rotation, distance of object, complex background. Due to variations in illumination, background, visual angle and facial expressions, the problem of machine face detection is complex.
Platform: |
Size: 2751488 |
Author: minu |
Hits:
Description: An automatic facial feature extraction method is
presented in this paper. The method is based on the edge
density distribution of the image. In the preprocessing stage a
face is approximated to an ellipse, and genetic algorithm is
applied to search for the best ellipse region match. In the
feature extraction stage, genetic algorithm is applied to
extract the facial features, such as the eyes, nose and mouth,
in the predefined sub regions. The simulation results
validates that the proposed method is capable of
automatically extracting features from various video images
effectively under natural lighting environments and in the
presence of certain amount of artificial noise and of multi-
face oriented with angles.-An automatic facial feature extraction method is
presented in this paper. The method is based on the edge
density distribution of the image. In the preprocessing stage a
face is approximated to an ellipse, and genetic algorithm is
applied to search for the best ellipse region match. In the
feature extraction stage, genetic algorithm is applied to
extract the facial features, such as the eyes, nose and mouth,
in the predefined sub regions. The simulation results
validates that the proposed method is capable of
automatically extracting features from various video images
effectively under natural lighting environments and in the
presence of certain amount of artificial noise and of multi-
face oriented with angles.
Platform: |
Size: 324608 |
Author: fais |
Hits:
Description: 本书从图形学最基础的光栅扫描、区域填充、画直线和圆弧等算法讲起，详细介绍了线裁剪和面裁剪、凸区域裁剪和凹区域裁剪的异同，景物空间消隐算法和图像空间消隐算法的差别，具体讲述了二叉空间剖分(BSP)、八叉树等图形学中常用的数据结构。新版本增加了图形用户界面、椭圆、图像压缩和线条反走样算法等，还增加了Liang-Barsky裁剪算法和Nicholl-Lee-Nicholl裁剪算法。新版本大大扩充了可见面光线跟踪算法。在绘制这一章中新增了基于物理的光照明模型，透明效果，阴影生成，纹理映射，以及锥光束、平面光束、笔形光束和随机光线跟踪算法；详细讨论了光辐射度基础，统一颜色空间，彩色图象量化和印刷介质上的颜色重现等新内容。本书列举了90个例子，具体描述了各类算法的执行细节。这对初学者体会算法的基本原理，比较各类算法执行时的细微差别大有禅益。具备大学数学基础和高级程序设计语言知识的人均可自学本书。
-Book from the most basic graphics raster scan, area filling, drawing lines and arcs and so I start algorithm, details of the line cutting and surface cutting, cutting convex and concave regions cut regional differences and similarities, features space blanking algorithm and image space removal method of difference, specifically about the binary space partition (BSP), octree and other data structures used in graphics. The new release adds a graphical user interface, ellipse, image compression and line anti-aliasing algorithm, also increased the Liang-Barsky clipping algorithm and the Nicholl-Lee-Nicholl cutting algorithm. Greatly expanded new version of the ray tracing algorithm can be met. In this chapter, drawing new physics-based lighting models, transparent effects, shadow generation, texture mapping, and the cone beam, flat beam, pencil beam and the random ray tracing algorithm detailed discussion of the optical radiometric base for the harmonized color Kongjian color image quanti
Platform: |
Size: 20500480 |
Author: 李大山 |
Hits:
Description: 基于MFC读取和显示BMP格式的图像，然后对该图像进行光线补偿这种预处理。-MFC-based read and display BMP format images, and then compensate for the lighting of the image preprocessing.
Platform: |
Size: 1963008 |
Author: 刘进进 |
Hits:
Description: 用于图像处理，进行光照设置，可在此基础上进行改进，有一定的参考价值。-image handle ,lighting
Platform: |
Size: 51200 |
Author: 宗常进 |
Hits:
Description: VB像素光影跟踪（图像渲染）工具,有需要的就下载吧。-VB Tracking pixel lighting (image rendering) tools, there is a need to download it.
Platform: |
Size: 256000 |
Author: 红烧鲫鱼 |
Hits:
Description: A content-aware algorithm that enhances dark images, sharpens edges, reveals details in textured regions, and preserves the smoothness of flat regions is proposed. The algorithm produces an ad hoc transformation for each image, adapting the mapping functions to each image’s characteristics to produce the maximum enhancement. We analyze the contrast of the image in the boundary and textured regions, and group the information with common characteristics. These groups model the relations within the image, from which we extract the transformation functions. The results are then adaptively mixed, by considering the human vision system characteristics, to boost the details in the image. Results show that the algorithm can automatically process a wide range of images—e.g., mixed shadow and bright areas, outdoor and indoor lighting, and face images—without introducing artifacts, which is an improvement over many existing methods.
Platform: |
Size: 6134784 |
Author: michael |
Hits:
Description: 该程序采用快速鲁棒特征点的图像拼接技术，该算法具有鲁棒性好，对图像序列中的光照变化、尺度变化、旋转变化具有良好的适应性。-The program uses fast image stitching robust feature points that the algorithm has better robustness and image sequence lighting changes, scale changes, changes in the rotation has a good adaptability.
Platform: |
Size: 356352 |
Author: 李默晨 |
Hits:
Description: In this paper, we propose a practical method for hardware-
accelerated rendering of the depth image-based representation (DIBR) object,
which is defined in MPEG-4 Animation Framework eXtension (AFX). The
proposed method overcomes the drawbacks of the conventional rendering, i.e. it
is slow since it is hardly assisted by graphics hardware and surface lighting is
static. Utilizing the new features of modern graphic processing unit (GPU) and
programmable shader support, we develop an efficient hardware-accelerated
rendering algorithm of depth image-based 3D object. Surface rendering in re-
sponse of varying illumination is performed inside the vertex shader while
adaptive point splatting is performed inside the fragment shader. Experimental
results show that the rendering speed increases considerably compared with the
software-based rendering and the conventional OpenGL-based rendering
method.
Platform: |
Size: 5890048 |
Author: phonox |
Hits:
Description: Image forgery is becoming a growing threat to information credibility. Among all kinds of image forgeries,photographic composites of human faces have very serious impacts(To combat this kind of forgery, some forensic methods propose to estimate the 3D lighting environments)
Platform: |
Size: 16185344 |
Author: song86
|
Hits: