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Added valid method

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Nathan 2019-02-07 19:58:09 -06:00
parent 4f9a3cf1e6
commit fd0c497c90
1 changed files with 93 additions and 30 deletions
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123
examples/convolution.rs
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@ -6,57 +6,120 @@ use std::cmp;
// evum CovvolveMode{
// Full,
// Valid,
// Same
// }
enum ConvolveMode{
Full,
Valid,
Same
}
#[allow(non_snake_case)]
fn Convolve1D<R: Real, D: Dim, E: Dim, S: Storage<R, D>, Q: Storage<R, E>>(
Vector : Vector<R,D,S>,
Kernel : Vector<R,E,Q>
fn convolve_full<R: Real, D: Dim, E: Dim, S: Storage<R, D>, Q: Storage<R, E>>(
vector : Vector<R,D,S>,
kernel : Vector<R,E,Q>
) -> Matrix<R, Dynamic, U1, VecStorage<R, Dynamic, U1>>
{
//
// Vector is the vector, Kervel is the kervel
// C is the returv vector
//
if Kernel.len() > Vector.len(){
return Convolve1D(Kernel, Vector);
}
let V = Vector.len();
let K = Kernel.len();
let L = V + K - 1;
let v = V as i8;
let k = K as i8;
let l = L as i8;
let mut C = DVector::<R>::zeros(L);
let vec = vector.len();
let ker = kernel.len();
let len = vec + ker - 1;
let v = vec as i8;
let k = ker as i8;
let l = len as i8;
let mut conv = DVector::<R>::zeros(len);
for i in 0..l{
let u_i = cmp::max(0, i - k);
let u_f = cmp::min(i, v - 1);
if u_i == u_f{
C[i as usize] += Vector[u_i as usize] * Kernel[(i - u_i) as usize];
conv[i as usize] += vector[u_i as usize] * kernel[(i - u_i) as usize];
}
else{
for u in u_i..(u_f+1){
if i - u < k{
C[i as usize] += Vector[u as usize] * Kernel[(i - u ) as usize];
conv[i as usize] += vector[u as usize] * kernel[(i - u ) as usize];
}
}
}
}
C
conv
}
fn convolve_valid<R: Real, D: Dim, E: Dim, S: Storage<R, D>, Q: Storage<R, E>>(
vector : Vector<R,D,S>,
kernel : Vector<R,E,Q>
) -> Matrix<R, Dynamic, U1, VecStorage<R, Dynamic, U1>>
{
let vec = vector.len();
let ker = kernel.len();
let len = vec - ker + 1;
let mut conv = DVector::<R>::zeros(len);
for i in 0..len {
for j in 0..ker {
conv[i] += vector[i + j] * kernel[ker - j - 1];
}
}
conv
}
fn convolve_same<R: Real, D: Dim, E: Dim, S: Storage<R, D>, Q: Storage<R, E>>(
vector : Vector<R,D,S>,
kernel : Vector<R,E,Q>
) -> Matrix<R, Dynamic, U1, VecStorage<R, Dynamic, U1>>
{
let vec = vector.len();
let ker = kernel.len();
let len = vec + ker - 1;
let v = vec as i8;
let k = ker as i8;
let l = len as i8;
let mut conv = DVector::<R>::zeros(len);
for i in 0..l {
let u_i = cmp::max(0, i - k);
let u_f = cmp::min(i, v - 1);
if u_i == u_f {
conv[i as usize] += vector[u_i as usize] * kernel[(i - u_i) as usize];
}
else{
for u in u_i..(u_f+1){
if i - u < k{
conv[i as usize] += vector[u as usize] * kernel[(i - u ) as usize];
}
}
}
}
conv
}
fn convolve<R: Real, D: Dim, E: Dim, S: Storage<R, D>, Q: Storage<R, E>>(
vector : Vector<R,D,S>,
kernel : Vector<R,E,Q>,
mode : Option<ConvolveMode>
) -> Matrix<R, Dynamic, U1, VecStorage<R, Dynamic, U1>>
{
//
// vector is the vector, Kervel is the kervel
// C is the returv vector
//
if kernel.len() > vector.len(){
return convolve(kernel, vector, mode);
}
match mode.unwrap_or(ConvolveMode::Full) {
ConvolveMode::Full => return convolve_full(vector,kernel),
ConvolveMode::Valid => return convolve_valid(vector,kernel),
ConvolveMode::Same => return convolve_same(vector,kernel)
}
}
fn main() {
let v1 = Vector2::new(3.0,3.0);
let v1 = Vector2::new(3.0,1.0);
let v2 = Vector4::new(1.0,2.0,5.0,9.0);
let x = Convolve1D(v1,v2);
let x = convolve(v1,v2,Some(ConvolveMode::Valid));
println!("{:?}",x)
}