Image Enhancement in the Spatial Domain
... neighborhood and move the centre of this area from pixel to pixel. • At each location, the histogram of the points in the neighborhood is computed and either a histogram equalization or histogram specification transformation function is obtained. • This function is used to map the gray level of the ...
... neighborhood and move the centre of this area from pixel to pixel. • At each location, the histogram of the points in the neighborhood is computed and either a histogram equalization or histogram specification transformation function is obtained. • This function is used to map the gray level of the ...
Efficient Digital Image Restoration for Analog Video Tape Archives
... are classified by user. Another important issue is to determine technical aspects which will affect further production steps like video editing and storage, e.g. using compressed video tape or file formats. Users can be divided into two groups: producers (e.g. TV production professionals) and consumer ...
... are classified by user. Another important issue is to determine technical aspects which will affect further production steps like video editing and storage, e.g. using compressed video tape or file formats. Users can be divided into two groups: producers (e.g. TV production professionals) and consumer ...
Population Monte Carlo Path Tracing
... rendering algorithms. Here we focus on three specific areas related to our work: adaptive image-plane sampling, perceptual metrics, and sample reuse. Typically, adaptive image-plane algorithms initially render the image with a small number of samples per pixel. The initial image is analyzed to label ...
... rendering algorithms. Here we focus on three specific areas related to our work: adaptive image-plane sampling, perceptual metrics, and sample reuse. Typically, adaptive image-plane algorithms initially render the image with a small number of samples per pixel. The initial image is analyzed to label ...
Imaging-Concepts
... • A frame consists of 625 lines • Subtracting sync and blanking lines yields 544 lines of displayable video • Lines are clipped from top and bottom to display 512 lines ...
... • A frame consists of 625 lines • Subtracting sync and blanking lines yields 544 lines of displayable video • Lines are clipped from top and bottom to display 512 lines ...
Voxel Similarity Measures for Automated Image
... feature space contains information about the distribution of feature space intensities. It is weighted towards high values if a large number of feature space pixels have high intensity, and it is weighted towards low values if a large number of feature space pixels have low intensity. The higher ord ...
... feature space contains information about the distribution of feature space intensities. It is weighted towards high values if a large number of feature space pixels have high intensity, and it is weighted towards low values if a large number of feature space pixels have low intensity. The higher ord ...
Polygon Rendering
... – render opaque polygons first, generating colour (x,y) – for each semi-transparent polygon (with opacity a, render into another buffer as polygon (x,y) – and combine using: ( 1 - a ) * colour (x,y) + a * polygon (x,y) ...
... – render opaque polygons first, generating colour (x,y) – for each semi-transparent polygon (with opacity a, render into another buffer as polygon (x,y) – and combine using: ( 1 - a ) * colour (x,y) + a * polygon (x,y) ...
3D capturing devices based on the principles of Integral Photography
... camera [10]. In this work, the MLA was attached externally in front of the camera lens but the outputs were very poor. The most important recent work regarding 3D capturing has been presented in [11] and uses a camera with a digital back This work is based on light fields [7] and uses an MLA to capt ...
... camera [10]. In this work, the MLA was attached externally in front of the camera lens but the outputs were very poor. The most important recent work regarding 3D capturing has been presented in [11] and uses a camera with a digital back This work is based on light fields [7] and uses an MLA to capt ...
ACR Technical Standard for Digital Image Data Management
... digital angiography), and large matrix size (e.g., digital radiography and digitized radiographic films). For both small- and large-matrix digital image data, the initial data set should provide full resolution data for processing, manipulation, and subsequent display. A. Acquisition or Digitization ...
... digital angiography), and large matrix size (e.g., digital radiography and digitized radiographic films). For both small- and large-matrix digital image data, the initial data set should provide full resolution data for processing, manipulation, and subsequent display. A. Acquisition or Digitization ...
Specification for banner advertising on eGuidelines.co.uk
... ensure the first frame displays all the information required by the ABPI Code of Practice (see below) as this is all that will be displayed if animations are not supported by a recipient’s email software. Link: If you require a click through to another web page or prescribing information, please ens ...
... ensure the first frame displays all the information required by the ABPI Code of Practice (see below) as this is all that will be displayed if animations are not supported by a recipient’s email software. Link: If you require a click through to another web page or prescribing information, please ens ...
Introduction and Display Technologies
... ○ requires synchronization between video signal and electron beam vertical sync pulse ■ Early computer displays ○ avoided synchronization using ‘vector’ algorithm ○ flicker and refresh were problematic ...
... ○ requires synchronization between video signal and electron beam vertical sync pulse ■ Early computer displays ○ avoided synchronization using ‘vector’ algorithm ○ flicker and refresh were problematic ...
INTRODUCTION TO CAD
... particular voltage • Can draw a line from any point to any point • CALLIGRAPHIC REFRESH GRAPHICS DISPLAY • Picture is refreshed 40-50 times a second ...
... particular voltage • Can draw a line from any point to any point • CALLIGRAPHIC REFRESH GRAPHICS DISPLAY • Picture is refreshed 40-50 times a second ...
Effect of number of projections on image quality of local CT
... data, before the window and level operation that transforms them to viewable 8 bit images. Therefore, these measurements were not influenced by the window and level operation, which is somewhat arbitrary in nature and which causes some round-off noise when the data are reduced to 8 bits. The contras ...
... data, before the window and level operation that transforms them to viewable 8 bit images. Therefore, these measurements were not influenced by the window and level operation, which is somewhat arbitrary in nature and which causes some round-off noise when the data are reduced to 8 bits. The contras ...
New Feature Extraction Technique for Color Image Clustering
... meaningful subgroups (clusters), which the number of subgroups and other information about their composition or representatives are unknown. Cluster analysis does not use category labels that tag objects with prior identifiers i.e. we don’t have prior information about cluster seeds or representativ ...
... meaningful subgroups (clusters), which the number of subgroups and other information about their composition or representatives are unknown. Cluster analysis does not use category labels that tag objects with prior identifiers i.e. we don’t have prior information about cluster seeds or representativ ...
Spatial anti-aliasing
In digital signal processing, spatial anti-aliasing is the technique of minimizing the distortion artifacts known as aliasing when representing a high-resolution image at a lower resolution. Anti-aliasing is used in digital photography, computer graphics, digital audio, and many other applications.Anti-aliasing means removing signal components that have a higher frequency than is able to be properly resolved by the recording (or sampling) device. This removal is done before (re)sampling at a lower resolution. When sampling is performed without removing this part of the signal, it causes undesirable artifacts such as the black-and-white noise near the top of figure 1-a below.In signal acquisition and audio, anti-aliasing is often done using an analog anti-aliasing filter to remove the out-of-band component of the input signal prior to sampling with an analog-to-digital converter. In digital photography, optical anti-aliasing filters are made of birefringent materials, and smooth the signal in the spatial optical domain. The anti-aliasing filter essentially blurs the image slightly in order to reduce the resolution to or below that achievable by the digital sensor (the larger the pixel pitch, the lower the achievable resolution at the sensor level).