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In order to effectively utilize the entire range of available LPI in a halftone system, an image selected for printing generally must have 1.5 to 2 times as many samples per inch (SPI). For instance, if the target output device is capable of printing at 100 LPI, an optimal range for a source image would be 150 to 200 PI.
Dots per inch (DPI, or dpi [1]) is a measure of spatial printing, video or image scanner dot density, in particular the number of individual dots that can be placed in a line within the span of 1 inch (2.54 cm).
For instance, at www.lexmark.com they tell that "resolution is measured in dpi (dots per inch) which is the number of pixels a device can fit into an inch of space." And at www.olympus-europa.com, they tell that a 640 x 480 pixels image at 150 dpi will end up as 10.84 x 8.13 cm in the print.
Pitch is the number of letters, numbers and spaces in one inch (25.4 mm) of running text, that is, characters per inch (abbreviated cpi), measured horizontally. [ 1 ] [ 2 ] The pitch was most often used as a measurement of the size of typewriter fonts as well as those of impact printers used with computers.
In January 2021—the final month of Donald Trump’s presidency—the U.S. Consumer Price Index (CPI) rose by a 1.4 percent annualized rate, compared to 3.2 percent in February 2024 under the ...
However, from December 1982 through December 2011, the all-items CPI-E rose at an annual average rate of 3.1 percent, compared with increases of 2.9 percent for both the CPI-U and CPI-W. [28] This suggests that the elderly have been losing purchasing power at the rate of roughly 0.2 (=3.1–2.9) percentage points per year.
[1] [2] According to the same standards, the "Number of Effective Pixels" that an image sensor or digital camera has is the count of pixel sensors that contribute to the final image (including pixels not in said image but nevertheless support the image filtering process), as opposed to the number of total pixels, which includes unused or light ...
A CPI is a statistical estimate constructed using the prices of a sample of representative items whose prices are collected periodically. Sub-indices and sub-sub-indices can be computed for different categories and sub-categories of goods and services, which are combined to produce the overall index with weights reflecting their shares in the total of the consumer expenditures covered by the ...