From [topic] do the separation of organism pattern efficiently and effectively.The aforementioned 1st organism pattern and the description above which are separated with formalization expedient and the aforementioned formalization expedient where [solution expedient] the image processing device of this invention the 1st organism pattern where texture differs and the picture acquisition expedient which acquires the picture where 2nd organism pattern is superimposed and formalizes the density of the aforementioned picture the parameter which responds to the difference of texture of the aforementioned 1st organism pattern and the aforementioned 2nd organism pattern making use of, the average and standard deviation of pixel value inside the local territory of the aforementioned picture as a standard, separates the aforementioned 1st organism pattern and the aforementioned 2nd organism pattern in the aforementioned picture2 organism patterns concerning respectively, it features that it has the pattern collation expedient which is collated with the pattern for known collation and.[課題]より効率的かつ効果的に生体パターンの分離を行なうこと。[解決手段]本発明の画像処理装置は、テクスチャの異なる第1生体パターン及び第2生体パターンが重畳した画像を取得する画像取得手段と、前記第1生体パターン及び前記第2生体パターンのテクスチャの違いに応じたパラメータを用いて、前記画像の局所領域内の画素値の平均と標準偏差とを基準として前記画像の濃度を正規化し、前記画像中の前記第1生体パターン及び前記第2生体パターンを分離する正規化手段と、前記正規化手段で分離された前記第1生体パターン及び前記第2生体パターンのそれぞれについて、既知の照合用パターンと照合するパターン照合手段と、を備えたことを特徴とする。
