星期六 2026年 4月 11日
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“劲爆”贴文洗版狂传! 图片视频真伪如何辨?

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报道:郑欣玲

在资讯发达的年代,不论什么内容的视频或图片,通过各种社交媒体流传已不再是什么新鲜事,而许多网民也总“独乐乐不如众乐乐”,特别是内容“劲爆“的,更是会在短时间内疯传,甚至迅速变成洗版贴文。

乐于分享本来就没有错,但是在科技发达且有许多修饰软件(如换脸技术) 可用的时代,篡改图片或视频的功夫不再是太难的事,因此,看到有争议性的短片,最好先确认其真伪,否则人云亦云之下,对当事人来说有欠公平,严重的话还可能引起社会不安、恐惧等负面影响,弹指之间的力量不容小觑,做个有智慧的素质网民更为重要。

其中一款“反向图片搜索“软件。

至于要如何辨别图片或视频真伪?本报简单综合网上资料给读者参考:

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1.仔细查看影片内的太阳光线,若影片上出现的影子或画面与光线的强弱不符,很可能是造假视频。

2.通过视频每帧中颜色像素变化的一致性等级来鉴定视频真伪,如果视频出现“超级强加”的元素或电脑生成的图像效果(CGI),颜色像素级别的差异即可分辨视频真假。

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3.对视频和音频进行多媒体取证分析。

4.可利用“反向图片搜索”(reverse image search),可截图视频或缩略图(thumbnail)进行检查。

YouTube DataViewer工具有助追查视频真伪。

5.使用YouTube DataViewer工具(网址:citizenevidence.amnestyusa.org),输入一条YouTube视频的链接后,该工具将能够自动生成一批缩略图,并且可直接点击每张图片旁边的链接,进行反向搜索。

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