The Sobel operator, sometimes called the Sobel–Feldman operator or Sobel filter, is used in image processing and computer vision, particularly within edge...

L_{x}={\begin{bmatrix}+1/2\\0\\-1/2\end{bmatrix}}L.} The well-known and earlier Sobel operator is based on the following filters: L y = [ + 1 0 − 1 + 2 0 − 2 + 1 0...

Look up Sobel or sobel in Wiktionary, the free dictionary. Sobel is a surname. Notable people with the surname include: Adam Sobel (born 1967), American...

Labs. In 1968, Sobel gave a talk entitled "An Isotropic 3x3 Image Gradient Operator" at SAIL; this method became known as the Sobel operator. It was developed...

therefore relatively inexpensive in terms of computations like Sobel and Kayyali operators. On the other hand, the gradient approximation which it produces...

gradient is to convolve an image with a kernel, such as the Sobel operator or Prewitt operator. Image gradients are often utilized in maps and other visual...

processing Feature detection (computer vision) Feature extraction Sobel operator Prewitt operator L. Roberts Machine Perception of 3-D Solids, Optical and Electro-optical...

using Frie-Chen operator Edge detection using Roberts cross operator Edge detection using Prewitt operator Edge detection using Sobel operator Digital Image...

Sierra Leone Civil War Sobel operator, used in digital image processing, particularly within edge detection algorithms Sobel test, in statistics Sobell...

convolution filters of size 2 × 2 or 3 × 3, such as the Laplacian, Sobel, Roberts and Prewitt operators. However, a larger mask will generally give a better approximation...

{1}{16}}{\begin{bmatrix}1&2&1\\2&4&2\\1&2&1\end{bmatrix}}} 3. The Sobel operator, used commonly for edge detection: [ 1 2 1 ] ∗ [ 1 0 − 1 ] = [ 1 0 −...

tone-like skin. Since human faces always have higher texture. Sobel operator or other operators can be applied to detect face edge. To position human features...

title('Detected Lines'); Digital image processing Canny edge detector Sobel operator Umbaugh, Scott E. (2011). Digital image processing and analysis : human...

diagonal edges in the blurred image. The edge detection operator (such as Roberts, Prewitt, or Sobel) returns a value for the first derivative in the horizontal...

mask, LumaSharpen, sharpen, sharpen complex 1/2, adaptive-sharpen) Sobel operator Split screen Upscaling (i.e. xBR, Super xBR, SuperRes) Texture filtering...

grey-toned backgrounds: Sample photo with horizontal and vertical embossing Sobel operator "Computer imaging: Digital image analysis and processing (Second ed...

page coloration of the de-skewed document can be removed by applying a Sobel operator to the de-skewed image and thresholding the output to obtain the binary...

There were a total of seven candidates, and a turnout of 70%. Although Alex Sobel had previously held Leeds North West for Labour, boundary changes following...

must be significant as determined by one of several tests, such as the Sobel test. The effect of an independent variable on the dependent variable can...

that can be used with post-processing to detect corners are the Kirsch operator and the Frei-Chen masking set. "Corner", "interest point" and "feature"...

detectors can also be referred to as interest point operators, or alternatively interest region operators (see also interest point detection and corner detection)...

Blurring, convert the image to grayscale ( grayScaling), make Canny operator, The Canny operator gives the edges on image. Vote on all possible circles in accumulator...

at the Wayback Machine SCHOOL OF INFORMATION, UC BERKELEY, SUMMER 2009 Sobel, Robert (2000). AMEX: A History of the American Stock Exchange. Beard Books...

the leading international stock market, and according to historian Robert Sobel, "had more individual foreign issues on its list than [...] all other American...

Re-Opening of the Largest Theatre in the State". Theatre Organ. 30 (6): 7–9. Sobel, Robert (1974). "Marcus Loew: An Artist in Spite of Himself". The Entrepreneurs:...

Anderson and Michael Gettings. Sobel's proof of modal collapse has been questioned by Koons, but a counter-defence by Sobel has been given.[citation needed]...

\,} Dalal and Triggs tested other, more complex masks, such as the 3x3 Sobel mask or diagonal masks, but these masks generally performed more poorly...

Dafora-Dubuclet. Oxford University Press. ISBN 9780195127850. Retrieved 2015-02-26. Sobel, R.; Raimo, J.W. (1978). Biographical Directory of the Governors of the...

this idea has been used for defining affine invariant interest point operators as well as affine invariant texture analysis methods. The interest points...

is a 1987 science fiction film directed by John Kincade, written by Mark Sobel, and starring Patrick Labyorteaux, Paul L. Smith, Edward Albert, Yaphet...