问题描述
我正在尝试使用谷歌视觉api从图像中提取文本,它可以工作.但是我只想检测图像的一部分以获得某些文本.
I'm trying to extract text from an image with google vision api, it works. But I just want to detect part of the image to get certain text.
这是我使用的图片
我只想提取maybank2u.com
到From Account:
的所有文本我知道有一些教程可以通过使用块来实现此技巧,但是这些教程是不同的编程语言.
I just want to extract all the text from maybank2u.com
until From Account:
I know there are some tutorials to do this trick by using block but those tutorials are different programming languages.
我的代码:
<div class="row">
<div class="col-12">
<ol>
<?php foreach ($text as $key => $texts): ?>
<li><h6> <?php echo ucfirst($texts->info()['description']) ?></h6><<br><br>
</li>
<?php endforeach ?>
</ol>
</div>
</div>
此代码将从图像中获取所有文本
This code will getting all the text from image
输出:
推荐答案
以下代码对我有用.我有一个php文件,test.php和一个图像文件/images/UUIPXl.png.
The code below works for me. I have one php file, test.php and one image file /images/UUIPXl.png.
要获取每一行文本,请迭代Google Vision中的文本注释,并创建一个行项目数组.它们每个都有一个x位置和一个文本值.
To get each line of text, I iterate the text annotations from Google Vision, and create an array of row items. Each of these has an x position and a text value.
然后我按x位置对每一行进行排序,并连接以创建一行文本.
I then sort each row by x position and concatenate to create a line of text.
最后,我们在获得所需的最终文本行时就停止了操作.
Finally we stop once we get the final desired line of text.
我得到这样的结果:
- maybank2u.com
- 打开BillPayment
- 状态:成功
- 参考编号:2950211545
- 交易日期:2016年2月1日13:09:17
- 金额:RM100.00
- 来自帐户564155051577 WCA
- maybank2u.com
- Open BillPayment
- Status: Successful
- Reference number: 2950211545
- Transaction date: 01 Feb 2016 13:09:17
- Amount: RM100.00
- From Account 564155051577 WCA
php代码:
<?php
require 'vendor/autoload.php';
use Google\Cloud\Vision\VisionClient;
$config = ["keyFile" => json_decode(file_get_contents("./APIKey.json"), true) ];
$vision = new VisionClient($config);
$image = $vision->image(
fopen('./images/UUIPXl.png', 'r'),
['TEXT_DETECTION']
);
$textAnnotations = $vision->annotate($image)->text();
$rows = [];
// Function used to sort our lines.
function sortProc($a, $b)
{
if ($a["x"] === $b["x"]) {
return 0;
}
return ($a["x"] < $b["x"]) ? -1 : 1;
}
// Remove first row (complete text).
array_shift($textAnnotations);
// We should calculate this, use a reasonable value to begin with.
$lineHeight = 8;
foreach ($textAnnotations as $text) {
$key = round(((double)($text->info()["boundingPoly"]["vertices"][0]["y"]))/$lineHeight);
$x = (int)$text->info()["boundingPoly"]["vertices"][0]["x"];
$value = ["x" => $x, "text" => $text->description()];
if (!isset($rows[$key])) {
$rows[$key] = [];
}
$rows[$key][] = $value;
}
$text = [];
foreach ($rows as $key => $value) {
// Sort by x value.
usort($value, "sortProc");
// Concatenate each line
$result = array_reduce($value, function($acc, $elem) {
$acc .= " " . $elem["text"];
return $acc;
}, "");
$text[] = $result;
// Stop when we get here!
if (preg_match("/from account/i", $result)) {
break;
}
}
?>
<div class="row" style="padding: 20px;">
<div class="col-12">
<ul>
<?php foreach ($text as $row): ?>
<li><h3> <?php echo ucfirst($row) ?></h3></li>
<?php endforeach ?>
</ul>
</div>
</div>
这篇关于如何使用Google Vision Api检测块内的所有文本的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!