초록 ▼

Apparatus and method for converting image data of an image matrix to an image matrix having a different number of matrix points. Each new image pel has a gray scale determined by considering its position with respect to the nearest neighbors of an original image pel. A look up table is provided havi

Apparatus and method for converting image data of an image matrix to an image matrix having a different number of matrix points. Each new image pel has a gray scale determined by considering its position with respect to the nearest neighbors of an original image pel. A look up table is provided having a plurality of planes, each plane including a plurality of storage elements arranged in columns and rows. The storage elements contain the gray scale level of a new image pel. The look up table plane represents the gray scale levels for a plurality of positions within the neighborhood. The planes are addressed by the gray scale levels of the pels comprising the neighborhood, and the storage elements within a plane are addressed by the position of the new pel with respect to the neighbors.

대표청구항 ▼

A machine method for converting old images formed as a M1×N1 matrix of gray scale data into new images having different matrix dimensions M2×N2, comprising: generating scaling factors from said matrix dimensions as M1/M2 and N1/N2, and multiplying said scaling factors with the address of each new im

A machine method for converting old images formed as a M1×N1 matrix of gray scale data into new images having different matrix dimensions M2×N2, comprising: generating scaling factors from said matrix dimensions as M1/M2 and N1/N2, and multiplying said scaling factors with the address of each new image pel to obtain a whole number TAB, with a remainder dx, and whole number NEXT PAIR with a remainder dy; each of said TAB and NEXT PAIR numbers identifying a neighborhood of pels of old image data contained in said M1×N1 matrix which contains a pel of new image data contained in said matrix M2×N2, and each of said remainders dx, dy identifying a position within each neighborhood of pels of said new image pel; addressing a lookup table with a gray scale of the pels comprising each of said neighborhoods and said dx and dy remainders, whereby a plane containing gray scale data for a plurality of locations within said neighborhood is addressed, and a gray scale of said plane is identified by dx and dy; whereby gray scale data for each new pel of a new image is produced by looking up said data as a function of the gray scale of old image pels constituting a neighborhood for said new pel, and the position of each said new pel dx, dy, within said neighborhood.