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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Gray level size zone matrix ： ウィキペディア英語版 Gray level size zone matrix The gray level size zone matrix (GLSZM) is the starting point of Thibault matrices. It is an advanced statistical matrix used for texture characterization. For a texture image f with N gray levels, it is denoted $GS\_f$ and provides a statistical representation by the estimation of a bivariate conditional probability density function of the image distribution values. It is calculated according to the pioneering run length matrix principle (RLM): the value of the matrix $GS\_f(s\_n,\; g\_m)$ is equal to the number of zones of size $s\_n$ and of gray level $g\_m$. The resulting matrix has a fixed number of lines equal to N, the number of gray levels, and a dynamic number of columns, determined by the size of the largest zone as well as the size quantization. The more homogeneous the texture, the wider and flatter the matrix. GLSZM does not required computation in several directions, contrary to RLM and co-occurrence matrix (COM). However, it has been empirically proved that the degree of gray level quantization still has an important impact on the texture classification performance. For a general application it is usually required to test several gray-level quantization to find the optimal one with respect to a training dataset. ==Examples== Two examples of matrix filling for textures 4 × 4 with four gray levels. thumb 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Gray level size zone matrix」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.