网页图片刮痧 - 处理CSS和透明度 [英] Web Image Scraping - Handling CSS and Transparency

问题描述

我在找一个库或工具时，我可能会建立一个Web图像刮刀。基本上只抓取DOM和具有特殊性能的拍摄。以下属性是特别重要的：

I'm looking for a library or utility upon which I may build a web image scraper. Basically just crawl the DOM and capture images with specific properties. The following attributes are of particular importance:

• 刮刀必须能够抓取CSS后，DOM和JavaScript已经被应用为crutial信息可通过这些元素被添加到页面。

• The scraper must be able to crawl the DOM after CSS and javascript have been applied as crutial information may be added to the page via those elements.

有些图像包含一个透明层，因而被设计成特定的颜色或纹理背景前面进行观看。对于这样的形象，我想采取截图，但裁剪的只是图像被刮掉，使图像及其相关背景拍摄的。

Some images contain a transparency layer and thus are designed to be viewed in front of a specific color or textured background. For such images I would like to take a screenshot, but cropped to just the image being scraped so that the image is captured with its associated background.

会有人能指点我一个实用程序或库会议这一标准？

Would someone be able to direct me to a utility or library meetings this criteria?

推荐答案

您将需要能够获得图像的X / Y /宽/高并用它来裁剪截图。我不相信任何硒司机会给你的。我认为这是可能的iMacros的，但我不是100％这一点。

You would need to be able to get the image's x/y/width/height and use that to crop a screenshot. I don't believe any of the selenium drivers will give you that. I think it's possible with iMacros but I'm not 100% on that.

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