Definitions for **"Convolution"**

The mathematical process by which raw data undergo spatial filtration prior to back projection.

Spatial filtering based on a weighted sum of neighboring pixels.

An image-processing operation frequently used to sharpen an image, blur an image, or highlight the edges in an image. The operation calculates the values of pixels in the destination image using the values of a neighborhood of pixels in the source image and the values in a special filter called a convolution kernel.

Two metal bellows plates welded or formed together. To count the number of convolutions in a metal bellows you count the spaces between the bellows plates.

On a bellow type air actuator, that part of the flexible member forming an annular protrusion larger than the O.D. of the end retainers or bead rings.( 058)

The smallest flexible unit of a bellows. The total movement capacity of a bellows is proportional to the number of convolutions.

A complete set of correlations, where every possible delay of the locally generated replica of the signal is included in the set.

A mathematical process. To convolve a 128-point HRTF with a sound wave, both functions must be sampled at the same rate, e.g. 44,100 samples per second. The 128 HRTF samples then cover a time period of 2.9 milliseconds. The HRTF samples are first flipped in time. They are then aligned with the first 128 sound wave samples. Paired samples are multiplied together, and the 128 products are added together to create one new HRTF-processed time sample. The HRTF is then shifted one notch to align with sound samples 2-129, and another multiply and add is performed. This shift, multiply, and add is repeated until you run out of sound samples. Since a 5-second sound segment has 220,500 samples, we are talking about 28 million multiplications

Chapter 15 describes the numarray.convolve module for computing one-D and two-D convolutions and correlations of numarray objects.

The act of rolling anything upon itself, or one thing upon another; a winding motion.

The state of being rolled upon itself, or rolled or doubled together; a tortuous or sinuous winding or fold, as of something rolled or folded upon itself.

An irregular, tortuous folding of an organ or part; as, the convolutions of the intestines; the cerebral convolutions. See Brain.

a gyrus ( Ch. 2).

an integral that expresses the amount of overlap of one func

an integral which expresses the amount of overlap of one function g as it is shifted over another function f

integral describing the overlap between two functions. More at mathworld.com.

the corrogated appearance of the cortex, includes both gyri and sulci

Used to describe one pleat of a pleated surface type element, usually in the shape of a V. Also refers to the twisting or coiling of a cotton material as well as the irregular spiral or screwlike condition of mature cotton.

the shape of something rotating rapidly

the action of coiling or twisting or winding together

Coolant Cooling system

Cool Copy

a kind of very general