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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<head>

<title>arrayfire.features — ArrayFire Python documentation</title>

var DOCUMENTATION_OPTIONS = {

URL_ROOT: '../../',

VERSION: '3.4.20160925',

COLLAPSE_INDEX: false,

FILE_SUFFIX: '.html',

HAS_SOURCE: true

};

</script>

</head>

<h1>Source code for arrayfire.features</h1><div class="highlight"><pre>

#######################################################

#

# This file is distributed under 3-clause BSD license.

# The complete license agreement can be obtained at:

# http://arrayfire.com/licenses/BSD-3-Clause

########################################################

"""

Features class used for Computer Vision algorithms.

"""

from .library import *

from .array import *

import numbers

<div class="viewcode-block" id="Features"><a class="viewcode-back" href="../../arrayfire.features.html#arrayfire.features.Features">[docs]</a>class Features(object):

"""

A container class used for various feature detectors.

Parameters

----------

num: optional: int. default: 0.

Specifies the number of features.

"""

def __init__(self, num=0):

self.feat = c_void_ptr_t(0)

if num is not None:

assert(isinstance(num, numbers.Number))

safe_call(backend.get().af_create_features(c_pointer(self.feat), c_dim_t(num)))

<div class="viewcode-block" id="Features.num_features"><a class="viewcode-back" href="../../arrayfire.features.html#arrayfire.features.Features.num_features">[docs]</a> def num_features(self):

"""

Returns the number of features detected.

"""

num = c_dim_t(0)

safe_call(backend.get().af_get_features_num(c_pointer(num), self.feat))

return num</div>

<div class="viewcode-block" id="Features.get_xpos"><a class="viewcode-back" href="../../arrayfire.features.html#arrayfire.features.Features.get_xpos">[docs]</a> def get_xpos(self):

"""

Returns the x-positions of the features detected.

"""

out = Array()

safe_call(backend.get().af_get_features_xpos(c_pointer(out.arr), self.feat))

return out</div>

<div class="viewcode-block" id="Features.get_ypos"><a class="viewcode-back" href="../../arrayfire.features.html#arrayfire.features.Features.get_ypos">[docs]</a> def get_ypos(self):

"""

Returns the y-positions of the features detected.

"""

out = Array()

safe_call(backend.get().af_get_features_ypos(c_pointer(out.arr), self.feat))

return out</div>

<div class="viewcode-block" id="Features.get_score"><a class="viewcode-back" href="../../arrayfire.features.html#arrayfire.features.Features.get_score">[docs]</a> def get_score(self):

"""

Returns the scores of the features detected.

"""

out = Array()

safe_call(backend.get().af_get_features_score(c_pointer(out.arr), self.feat))

return out</div>

<div class="viewcode-block" id="Features.get_orientation"><a class="viewcode-back" href="../../arrayfire.features.html#arrayfire.features.Features.get_orientation">[docs]</a> def get_orientation(self):

"""

Returns the orientations of the features detected.

"""

out = Array()

safe_call(backend.get().af_get_features_orientation(c_pointer(out.arr), self.feat))

return out</div>

<div class="viewcode-block" id="Features.get_size"><a class="viewcode-back" href="../../arrayfire.features.html#arrayfire.features.Features.get_size">[docs]</a> def get_size(self):

"""

Returns the sizes of the features detected.

"""

out = Array()

safe_call(backend.get().af_get_features_size(c_pointer(out.arr), self.feat))

return out</div></div>

</pre></div>

</div>

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<h3>Related Topics</h3>

<ul>

<li><a href="../../index.html">Documentation overview</a><ul>

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