Blend modes for mineralogy images

摘要

Optimized blending mode for mineralogy images. A luminosity value is determined for a pixel in a base layer or top layer mineralogy image. An image weighting value is determined from the luminosity value and an optional mixing parameter. A multiply value is determined by multiplying the base and top layer pixel values. An overlay value is determined from twice the multiply value if the value of one of the base layer or top layer pixel values is over a threshold, otherwise it is determined by inverting twice the product of the inverted top layer pixel value with the inverted base layer pixel value. A blended image pixel value is determined by adding the multiply value weighted with the image weighting value and the overlay value weighted with the inverted image weighting value.

主权项

1. A computer implemented method for blending mineralogy images, comprising:
receiving a base layer mineralogy image and a top layer mineralogy image; and sequentially, via a computer processor and for each pixel in the base or top layer mineralogy images:
determining a base layer value from the pixel in the base layer mineralogy image;determining a top layer value from the pixel in the top layer mineralogy image;determining a luminosity value from one of the base layer or top layer values;determining a multiply value by multiplying the base and top layer values;determining an overlay value by doubling the multiply value if one of the base layer or top layer values is less than a threshold, and by inverting twice the product of the inverted top layer value with the inverted bottom layer value;determining an image blending weight from the luminosity value; anddetermining a blended image value as a weighted average of the multiply value and the overlay value, wherein the multiply value is weighted by the image blending weight and the overlay value is weighted by the inverted image blending weight.