How to parse the following "N1+に必要となる＋N2"?

Question

I am not sure whether or not I have learnt this grammar before. I am reading a book about OpenCV and found a sentence as follows.

OpenCVを効果的に用いるのに必要となるコンピュータビジョンについての一般的な背景知識もあわせて説明します。

The confusing part is the grammar

N1+に必要となる+N2

where

N1=OpenCVを効果的に用いるの

and

N2=コンピュータビジョンについての一般的な背景知識

I know

• N1をN2とする that means let N1 be N2.
• NをNa-adjにする or Nをi-adj-stemくする that means making N a condition represented by the adjective.

Is it possible to say the following?

OpenCVを効果的に用いるのに必要とするコンピュータビジョンについての一般的な背景知識

Answer 1

「Noun 1 + に必要{ひつよう}となる + Noun 2」

can only mean:

"Noun 2 (which is) necessary/required for Noun 1"

because「Noun 1 + に必要となる」 functions as a relative clause modifying 「Noun 2」. In other words, between Noun 1 and Noun 2, the latter is the "main" noun of the whole phrase.

Thus,

「OpenCVを効果的{こうかてき}に用{もち}いるのに必要となるコンピュータビジョン」

means:

"the computer vision (technology) necessary/required for effectively utilizing OpenCV"

For those who are wondering, the 「の」 in 「用いるの」 is a nominalizer, making it possible to treat the phrase 「OpenCVを効果的に用いるの」 just like a noun. That whole phrase is what the questioner is calling "N1".

Finally,

Is it possible to say the following?

OpenCVを効果的に用いるのに必要とするコンピュータビジョン

No, it is not possible. 「なる」 and 「する」 mean very different things; therefore, they cannot be used interchangeably. I could not think of an exception.