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第十一幕.摄影技术

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莉莎有些好奇,她眼前的这个名为“照相机”的玩意儿,虽然蕴含了极端复杂的魔法阵,但与传统的投影魔法有着显著的差异,明显不是过去那些取代投影魔法其中一个阶段的魔导器。

“很简单的,过去的投影魔法,实际上是捕捉所有的元素与魔力流动,构建出来的一个完全动态的画面,这样的画面还原度相当高,但也有一个弊端,那就是对于传输精度以及采集图像时候的魔力控制要求相当高,这也正是令其成为五阶魔法的原因之一。”

罗森轻轻一挥手,半空中便出现了由幽蓝符文构成的画面,这是移动终端的投影。

“但这种方法,简单来说,不亲民。”

由于投影魔法一开始是为了完全重现当时的场景,所以包括魔力流动之类细微的变化都会收录其中,导致相当复杂。

而罗森开发这个摄影技术,则抛弃了大部分冗余的数据,只采集最基本的,以正常人的视觉能够捕捉到的东西。

“在经过曝光,也就是令这个感光法阵接受外界图像的时候,我使用的也并非连续平滑的图像,而是一个个分开的点,每一个点记载着它的位置和色彩,这种离散的量,实际上比起流动的魔力要更加容易存储。”

所以罗森的照相机,第一步是将连续的现实离散化。

利用西格尔变换,也就是这个世界的傅里叶变换,将所有的连续量都转化为离散量,以像素的模式存储在结晶之中,一举解决了投影魔法对于魔力控制精度要求过高和存储困难的缺点。

而想要播放出来,也相当简单,只要进行西格尔反变换,将离散的量重新变成连续的量就好了。

“但这样制作出来的图像,实际上并非完全真实的图像,只能称得上是肉眼能观察到的虚像,其中的元素分布,魔力流动完全无法体现出来,但对于寻常人来说,这些都是不必要的。”

罗森说着,从莉莎手中拿回了这个照相机,接着轻轻启动,片刻之后,便将莉莎此时的模样拍摄进了结晶之中。

“它可以与移动终端相连,将照片直接上传到论坛的帖子或者个人空间里,也能够像投影魔法一样,直接投影到半空中。”

一点,半空中便出现了莉莎的画面,看起来与真正的莉莎没什么太大的区别,如果不用魔力探知,那么便和投影魔法所展示的图画没有两样。

“移动终端里就内置了这个照相机的全部功能,但由于结晶的容量有限,所以我并没有使用高级配置的照相机,画面质量会差许多,而这一个,就是完全版的照相机,画面精度大约是移动终端的一千倍以上。”

根据罗森上一世的经验,即便手机占据了人们的生活,但照相机却并不会就此退场,这是专业性的需要。

事实上,这个照相机还具备扩充能力,如果需要的话,还能够将投影魔法的整个法阵铭刻进来,使其成为一个真正的投影魔法照相机,当然,相应的,启动便也就需要一定的魔法实力才行。

不过,对于格兰蒂亚接下来的魔法竞赛,罗森认为能拿出这个照相机,就已经足够碾压其他人了。

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