Look Up Table. A memory which is used to perform tabulate the results of a calculation. The memory address is formed from the input to the calculation, and the memory contents are the result of the calculation. All possible calculations must be performed in advance, with the results forming the (static) look up table.
Look-up table. A cross-reference table in the computer memory that transforms raw information from the scanner or computer and corrects values to compensate for weakness in equipment or for differences in emulsion types.
Lookup table, a means of storing data that would otherwise require an unreasonable amount of resources. For example, a palette is a type of lookup table that allows image data to be encoded indirectly, thereby reducing its overall space requirements. Gamma correction, on the other hand, has potentially large computational requirements, since it involves the use of exponential functions. Calculating the exponentials once for every possible sample value and storing the results in a lookup table is almost always more efficient than computing an exponential for every sample in the image.
Stands for Look-up Table. It performs gamma correction and converts the grayscale data input from a graphics card into luminance value. Page Top
Look Up Table. It's a reference file used to convert images from one color space to another. An example is a look up table for converting RGB pixels into CYMK pixels for printing. It can also be used as a cross-reference table that transforms raw information from a device (such as a scanner), and corrects the values to compensate for differences in device behavior.
(Look up table) Table of correspondence enters of the values of entry and exit used mainly the video charts.
Acronym for lookup table. A small RAM (e.g. flip-flops with output multiplexer tree), usually 16 bits (sometimes 8 bits), that implements an arbitrary combinational logic function of 4 (respectively, 3) inputs. Often found with a number prefix that indicates precise number of inputs. Thus a 4-LUT is a 4-input (16 bit RAM) lookup table.
Look Up Table. In general, a table used to transform data. In frame buffer hardware, a LUT can be used to map indexed-color pixels into a selected set of truecolor values, or to perform gamma correction. In software, a LUT can be used as a fast way of implementing any one-variable mathematical function.
Look-up table. The table of colours a computer can display at a given time. The computer uses the table to approximate the desired colour from the range it has available.
Look-Up-Table, also called function generator with N inputs and one output. Can implement any logic function of its N inputs. N is between 2 and 6, most popular are 4-input LUTs.
A digital image processing tool for converting color data from on system to another (e.g., RGB color to CMYK), including compensation for the output characteristics of a particular device, in k and substrate. An example would be a LUT that corrects the color balance for an output device to match the characteristics of a substrate (i.e., appearance, absorbency, etc.).
Look up table. When combined with one or more flip flops, constitutes the basic memory-based programmable logic element in FPGAs. MAC Multiply and accumulate. A measure of arithmetical performance in digital signal processing systems. FPGAs can achieve some of the highest DSP performance, calculating a half trillion MACs per second.
Color Look Up Table. A table--it can be in hardware or software form--that contains information on the mixing of red, green, and blue color intensity in a palette. A LUT is a two-dimensional table with input values (X axis) and output values (Y axis.) By default, LUT are neutral, which means that the overall input values must equal the overall output values.