.TH BLIND-DOT-PRODUCT 1 blind .SH NAME blind-dot-product - Calculate the dot product of colours in a video .SH SYNOPSIS .B blind-dot-product .I right-hand-stream .SH DESCRIPTION .B blind-dot-product reads left-hand operands from stdin, and right-hand operands from .IR right-hand-stream , and calculates the dot product of the colours. The product is store in all four channels. .P If stdin is longer than .IR right-hand-stream , the remainder of stdin is printed without any changes. If stdin is shorter than .IR right-hand-stream , the remainder of .I right-hand-stream is ignored but may be partially read. .SH SEE ALSO .BR blind (7), .BR blind-arithm (1), .BR blind-cross-product (1), .BR blind-quaternion-product (1), .BR blind-vector-projection (1) .SH AUTHORS Mattias Andrée .RI < maandree@kth.se >