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# imlincomb() - Image Processing

### Syntax

### Example

### Output / Return Value

### Limitations

### Alternatives / See Also

### Reference

Z = imlincomb(K1,A1,K2,A2,...,Kn,An) computesK1*A1 + K2*A2 + ... + Kn*Anwhere K1, K2, through Kn are real, double scalars and A1, A2, through An are real, nonsparse, numeric arrays with the same class and size. Z has the same class and size as A1 unless A1 is logical, in which case Z is double.Z = imlincomb(K1,A1,K2,A2,...,Kn,An,K) computesK1*A1 + K2*A2 + ... + Kn*An + Kwhere imlincomb adds K, a real, double scalar, to the sum of the products of K1 through Kn and A1 through An. Z = imlincomb(___,output_class) lets you specify the class of Z. output_class is a string containing the name of a numeric class.gpuarrayZ = imlincomb(gpuarrayK,gpuarrayA,___,output_class) performs the operation on a GPU, where the input values,gpuarrayK and gpuarrayA, are gpuArrays and the output value, gpuarrayZ is a gpuArray. This syntax requires the Parallel Computing Toolboxâ„˘When performing a series of arithmetic operations on a pair of images, you can achieve more accurate results if you use imlincomb to combine the operations, rather than nesting calls to the individual arithmetic functions, such as imadd. When you nest calls to the arithmetic functions, and the input arrays are of an integer class, each function truncates and rounds the result before passing it to the next function, thus losing accuracy in the final result. imlincomb computes each element of the output Z individually, in double-precision floating point. If Z is an integer array, imlincomb truncates elements of Z that exceed the range of the integer type and rounds off fractional values.Code Generation support: Yes.MATLAB Function Block support: Yes.

Z = imlincomb(K1,A1,K2,A2,...,Kn,An)Z = imlincomb(K1,A1,K2,A2,...,Kn,An,K)Z = imlincomb(___,output_class)gpuarrayZ = imlincomb(gpuarrayK,gpuarrayA,___,output_class)

K1*A1 + K2*A2 + ... + Kn*An