how to use ippiHaarClassifierInit_32f

风__付 · ‎06-01-2020

hi,

when i use opencv and with ipp 2018

and found ippiHaarClassifierInit_32f would return -8 error. code like this.

......................

#ifdef HAVE_IPP
int can_use_ipp = !out->has_tilted_features && !out->is_tree && out->isStumpBased;

if( can_use_ipp )
{
int ipp_datasize = cascade->count*sizeof(out->ipp_stages[0]);
float ipp_weight_scale=(float)(1./((orig_window_size.width-icv_object_win_border*2)*
(orig_window_size.height-icv_object_win_border*2)));

out->ipp_stages = (void**)cvAlloc( ipp_datasize );
memset( out->ipp_stages, 0, ipp_datasize );

ipp_features = (CvRect*)cvAlloc( max_count*3*sizeof(ipp_features[0]) );
ipp_weights = (float*)cvAlloc( max_count*3*sizeof(ipp_weights[0]) );
ipp_thresholds = (float*)cvAlloc( max_count*sizeof(ipp_thresholds[0]) );
ipp_val1 = (float*)cvAlloc( max_count*sizeof(ipp_val1[0]) );
ipp_val2 = (float*)cvAlloc( max_count*sizeof(ipp_val2[0]) );
ipp_counts = (int*)cvAlloc( max_count*sizeof(ipp_counts[0]) );

for( i = 0; i < cascade->count; i++ )
{
CvHaarStageClassifier* stage_classifier = cascade->stage_classifier + i;
for( j = 0, k = 0; j < stage_classifier->count; j++ )
{
CvHaarClassifier* classifier = stage_classifier->classifier + j;
int rect_count = 2 + (classifier->haar_feature->rect[2].r.width != 0);

ipp_thresholds = classifier->threshold[0];
ipp_val1 = classifier->alpha[0];
ipp_val2 = classifier->alpha[1];
ipp_counts = rect_count;

for( l = 0; l < rect_count; l++, k++ )
{
ipp_features = classifier->haar_feature->rect.r;
//ipp_features.y = orig_window_size.height - ipp_features.y - ipp_features.height;
ipp_weights = classifier->haar_feature->rect.weight*ipp_weight_scale;
}
}

           returnVal = ippiHaarClassifierInit_32f((IppiHaarClassifier_32f*)out->ipp_stages,
               (const IppiRect*)ipp_features, ipp_weights, ipp_thresholds,
               ipp_val1, ipp_val2, ipp_counts, stage_classifier->count);
if(returnVal < 0 )
break;
}

if( i < cascade->count )
{
for( j = 0; j < i; j++ )
if( out->ipp_stages )
ippFree( (IppiHaarClassifier_32f*)out->ipp_stages );
cvFree( &out->ipp_stages );
}
}
#endif

...........................

but if i change ipp version to 6.1

the code just like this

.........................

#ifdef HAVE_IPP
int can_use_ipp = !out->has_tilted_features && !out->is_tree && out->isStumpBased;

if( can_use_ipp )
{
int ipp_datasize = cascade->count*sizeof(out->ipp_stages[0]);
float ipp_weight_scale=(float)(1./((orig_window_size.width-icv_object_win_border*2)*
(orig_window_size.height-icv_object_win_border*2)));

out->ipp_stages = (void**)cvAlloc( ipp_datasize );
memset( out->ipp_stages, 0, ipp_datasize );

ipp_features = (CvRect*)cvAlloc( max_count*3*sizeof(ipp_features[0]) );
ipp_weights = (float*)cvAlloc( max_count*3*sizeof(ipp_weights[0]) );
ipp_thresholds = (float*)cvAlloc( max_count*sizeof(ipp_thresholds[0]) );
ipp_val1 = (float*)cvAlloc( max_count*sizeof(ipp_val1[0]) );
ipp_val2 = (float*)cvAlloc( max_count*sizeof(ipp_val2[0]) );
ipp_counts = (int*)cvAlloc( max_count*sizeof(ipp_counts[0]) );

for( i = 0; i < cascade->count; i++ )
{
CvHaarStageClassifier* stage_classifier = cascade->stage_classifier + i;
for( j = 0, k = 0; j < stage_classifier->count; j++ )
{
CvHaarClassifier* classifier = stage_classifier->classifier + j;
int rect_count = 2 + (classifier->haar_feature->rect[2].r.width != 0);

ipp_thresholds = classifier->threshold[0];
ipp_val1 = classifier->alpha[0];
ipp_val2 = classifier->alpha[1];
ipp_counts = rect_count;

for( l = 0; l < rect_count; l++, k++ )
{
ipp_features = classifier->haar_feature->rect.r;
//ipp_features.y = orig_window_size.height - ipp_features.y - ipp_features.height;
ipp_weights = classifier->haar_feature->rect.weight*ipp_weight_scale;
}
}

if( ippiHaarClassifierInitAlloc_32f( (IppiHaarClassifier_32f**)&out->ipp_stages,
(const IppiRect*)ipp_features, ipp_weights, ipp_thresholds,
ipp_val1, ipp_val2, ipp_counts, stage_classifier->count ) < 0 )
break;
}

if( i < cascade->count )
{
for( j = 0; j < i; j++ )
if( out->ipp_stages )
ippiHaarClassifierFree_32f( (IppiHaarClassifier_32f*)out->ipp_stages );
cvFree( &out->ipp_stages );
}
}
#endif

............................................

it would work well. the different between above code is ippiHaarClassifierInitAlloc_32f and ippiHaarClassifierInit_32f

so i'm not sure what's the problem with 2018 ipp. please help, or any one can send me a example code to use ippiHaarClassifierInit_32f

thank 's a lot.

Ruqiu_C_Intel · ‎06-02-2020

Hello,

The function ippiHaarClassifierInitAlloc_32f has been removed from IPP9.0. As workaround, please use ippiHaarClassifierGetSize + ippMalloc + ippiHaarClassifierInit_32f to replace the function ippiHaarClassifierInitAlloc_32f .

Regards,

Ruqiu

风__付 · ‎06-02-2020

RUQIU C. (Intel) wrote:
Hello,
The function ippiHaarClassifierInitAlloc_32f has been removed from IPP9.0. As workaround, please use ippiHaarClassifierGetSize + ippMalloc + ippiHaarClassifierInit_32f to replace the function ippiHaarClassifierInitAlloc_32f .
Regards,
Ruqiu

thank you

and can you send me an example for how to use ippiHaarClassifierGetSize + ippMalloc + ippiHaarClassifierInit_32f

i could not find such things from the documentation