18.14.1 The 2D Correlation Dialog Box

See Recalculating Analysis Results.

Specifies the matrix that has the first input signal. See Specifying Your Input Data.

Specifies the matrix that has the second input signal. To calculate auto-correlation, this should be the same as Input Matrix1. See Specifying Your Input Data.

Specifies the method for calculating 2D correlation.

• FFT: This method is faster but less accurate than the Shift accumulation method.
• Shift Accumulate: This method computes the correlation using its mathematical definition. It is more accurate, but could be much slower for large data.

Specifies whether linear correlation or circular correlation will be computed.

• Linear: Data points outside the input range will be viewed as zero.
• Circular: Data points outside the input range will be viewed as repetition of the input data points.

Specifies whether the result should be normalized.

Specifies the output. See Output Results.