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摘要

A method for highlighting particular features of an image (48) photographically captured and stored in a computer comprises capturing an image (50) of an object using a camera and storing the image as a series of numbers in the memory of a computer. The computer contains an image capture board and a graphics board so as to acquire and display the image on a monitor. The operator enlarges an image region of interest to display individual pixels and then, through the computer, selects individual pixels from the region to give a test set of pixels. The eigenvectors and eigenvalues of the test set are then calculated to define an ellipsoid encompassing substantially all of the test set and defining an envelope in color space. The image is scanned using the ellipsoid to either accept or reject each of its pixels. The accepted or rejected pixels are assigned a value to be used in producing a second display (56) which highlights the desired pixels.