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我的问题是：如何将我的“自己的”haarcascade XML 用于 marilena + flartoolkit？我一直在疯狂地搜索，在这里偶然发现了这个：

http://www.moment77.se/flash-classes/code-snippets/convert-haar-cascades-from-xml-to-actionscript/

但是 PHP 脚本不起作用，屏幕仍然空白，我也尝试了我朋友的服务器。

我还可以做些什么？还是其他人能够执行它？还有其他方法吗？

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1 回答 1

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我通过做两件事让它工作。

  1. 转义 first 里面的引号echo
  2. 更改它用于获取的节点的名称count（至少对于我的示例数据）

最终代码如下所示

<?php

$xml = simplexml_load_file('haarcascades.xml');
$stages = $xml->haarcascade_frontalface_alt->stages->_;

for($s = 0; $s < count($stages); $s++){
  $trees = $stages[$s]->trees->_;
  if($s == 0)
    echo "

    tree = firstTree = new FeatureTree(". $stages[$s]->stage_threshold.");";
  else
    echo "

    tree = tree.next = new FeatureTree(\". $stages[$s]->stage_threshold.\");";

  for($t = 0; $t < count($trees); $t++){
    $r1 = str_replace(" ", ",", trim(substr($trees[$t]->_->feature->rects->_[0], 0, strlen($trees[$t]->_->feature->rects->_[0])-1)));
    $r2 = str_replace(" ", ",", trim(substr($trees[$t]->_->feature->rects->_[1], 0, strlen($trees[$t]->_->feature->rects->_[1])-1)));
    $th = $trees[$t]->_->threshold;
    $lv = $trees[$t]->_->left_val;
    $rv = $trees[$t]->_->right_val;
    if($t == 0)
      echo "
      feature = tree.firstFeature = new Feature2Rects($th, $lv, $rv, [$r1], [$r2]);";
    else if($t == (count($trees) -1))
      echo "
      feature.next = new Feature2Rects($th, $lv, $rv, [$r1], [$r2]);";
    else
      echo "
      feature = feature.next = new Feature2Rects($th, $lv, $rv, [$r1], [$r2]);";
  }
}

$xml->haarcascade_frontalface_alt创建计数时注意用法吗？这已更改，因为我使用的 xml 在顶部看起来像这样

<?xml version="1.0"?>
<opencv_storage>
    <haarcascade_frontalface_alt type_id="opencv-haar-classifier">
        <size>20 20</size>
        <stages>

您需要将该名称更改为您的顶级节点的名称。

输出看起来像这样（但更长）

feature = tree.firstFeature = new Feature2Rects(-0.0951507985591888, 0.6470757126808167, 0.4017286896705627, [5,3,10,9,-1], [5,6,10,3,3]);
feature = feature.next = new Feature2Rects(6.2702340073883533e-003, 0.3999822139739990, 0.5746449232101440, [15,2,4,10,-1], [15,2,2,10,2]);
于 2013-03-19T15:59:55.780 回答