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commit : visushrink updated

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This commit is contained in:
Rafat Hussain
2017-09-19 17:08:33 +05:30
parent de4b96e123
commit 310b7759f1
4 changed files with 2133 additions and 18 deletions
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17
auxiliary/denoise.c
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@@ -43,22 +43,23 @@ void visushrink(double *signal,int N,int J,char *wname,char *method,char *ext,ch
}
for(i = 0; i < dlen;++i) {
dout[i] = wt->output[iter+i];
dout[i] = fabs(wt->output[iter+i]);
}
sigma = mad(dout,dlen);
sigma = median(dout,dlen);
dwt_len = wt->outlength;
td = sqrt(2.0 * log(dwt_len)) * sigma / 0.6745;
if(!strcmp(thresh,"hard")) {
for(i = 0; i < dwt_len;++i) {
for(i = wt->length[0]; i < dwt_len;++i) {
if (fabs(wt->output[i]) < td) {
wt->output[i] = 0;
}
}
} else if(!strcmp(thresh,"soft")) {
for(i = 0; i < dwt_len;++i) {
for(i = wt->length[0]; i < dwt_len;++i) {
if (fabs(wt->output[i]) < td) {
wt->output[i] = 0;
} else {
@@ -123,10 +124,10 @@ void sureshrink(double *signal,int N,int J,char *wname,char *method,char *ext,ch
dwt_len = wt->length[it+1];
for(i = 0; i < dwt_len;++i) {
dout[i] = wt->output[len+i];
dout[i] = fabs(wt->output[len+i]);
}
sigma = mad(dout,dwt_len);
sigma = median(dout,dwt_len);
if ( sigma < 0.00000001) {
td = 0;
@@ -169,13 +170,13 @@ void sureshrink(double *signal,int N,int J,char *wname,char *method,char *ext,ch
td = td * sigma / 0.6745;
if(!strcmp(thresh,"hard")) {
for(i = 0; i < dwt_len;++i) {
for(i = wt->length[0]; i < dwt_len;++i) {
if (fabs(wt->output[len+i]) < td) {
wt->output[len+i] = 0;
}
}
} else if(!strcmp(thresh,"soft")) {
for(i = 0; i < dwt_len;++i) {
for(i = wt->length[0]; i < dwt_len;++i) {
if (fabs(wt->output[len + i]) < td) {
wt->output[len+i] = 0;
} else {