Coordinate conversion apparatus and method

Details Coordinate conversion apparatus and method Coordinate conversion apparatus and method

2005-01-18

2008-09-02

Sherali, Ishrat (Department: 2624)

Image analysis

Image transformation or preprocessing

Changing the image coordinates

Reexamination Certificate

active

07421150

ABSTRACT:
Provided is a coordinate conversion apparatus and method capable of removing an accumulation position error when output pixel coordinates are obtained from input image coordinates by using an inverse-mapping technique. In the coordinate conversion apparatus, an output-size register for storing a size of an outputted image, and an input-size register stores a size of an image inputted from an outside. An adder adds, among a quotient and a remainder from dividing the size of the image stored in the input-size register by the size of the image stored in the output-size register, the remainder to the size of the image stored in the input-size register. An accumulation register stores the added value calculated by the adder. A decode logic unit obtains a position between input samples from which an output pixel is re-sampled, by comparing an output value of the accumulation register with an output value of the output-size register.

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