GoogleSpreadSheetから画像データを取り出したくても、
GoogleSheetAPIからは画像の加工や移動ができるのみで、取り出すことはできないようです。
が、 base64エンコードした画像を文字列としてセルに貼り付ける という裏技 tips があります。
例えば以下はHTMLの中に画像データが内包されています。
<!DOCTYPE html>
<html lang="ja"">
<head>
<meta charset="utf-8" />
<title>base64 test</title>
</head>
<body>
<img src="data:image/png;base64,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">
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</html>
上記データは
画像をbase64エンコードしてくれるサイトで変換しました。
この文字列をSheetにコピペし、文字列としてAPIで読み取ればOKです。
ただし、1つのセルに50000文字までの制限があるので、
数十キロバイトを超える画像を扱う場合は文字列を分割してセルに格納する必要があります。