MUMDMC2025_DataSet_sample.rar

The <b>MUMDMC2025 </b>dataset offers a unique and systematically collected sample of microscope rock images from the Eastern Desert of Egypt (Wadi Fatira El-beida). Its distinguishing feature is comprehensive rotational imaging, capturing the full spectrum of anisotropic optical properties. Specifically, for each sample, images are acquired at 5-degree increments across complete 360-degree rotations under both Plane-Polarized Light (PPL) and Cross-Polarized Light (XPL). This detailed approach precisely documents key optical phenomena, including pleochroism variations (e.g., hornblende displaying characteristic green to brown color transitions), extinction angle progressions (e.g., plagioclase exhibiting 0°–20° extinction ranges), and complete birefringence sequences (e.g., biotite showing 0.04–0.08 birefringence variations). The dataset comprises a total of 14,400 high-resolution images, stemming from 72 rotational sequences, covering 5 distinct mineral species, observed under 2 polarization modes (PPL/XPL), and captured from 20 individual crystals. This extensive collection provides an unprecedented and comprehensive optical characterization resource for mineralogical and petrographic studies.<b>MUMDMC2025</b>数据集提供了采自埃及东部沙漠（瓦迪法蒂拉埃尔贝达）的独特且经系统采集的显微镜岩石图像样本。其显著特征为全面旋转成像，可捕捉各向异性光学特性的全光谱范围。具体而言，针对每个样本，在平面偏振光（Plane-Polarized Light，PPL）与正交偏振光（Cross-Polarized Light，XPL）两种模式下，均以5°为间隔采集完整360°旋转过程中的图像。这种精细化采集方案精准记录了关键光学现象，包括多色性变化（例如角闪石呈现典型的绿至棕色彩过渡）、消光角变化（例如斜长石表现出0°–20°的消光范围）以及完整的双折射序列（例如黑云母展现出0.04–0.08的双折射变化）。本数据集总计包含14400张高分辨率图像，源自72组旋转序列，涵盖5种不同矿物，在2种偏振模式（PPL/XPL）下采集，且对应20个独立晶体。这一丰富的数据集为矿物学与岩石学研究提供了前所未有的全面光学表征资源。

搜集汇总

背景与挑战

背景概述

MUMDMC2025数据集是一个系统收集的显微镜岩石图像样本，来自埃及东部沙漠（Wadi Fatira El-beida），特点是采用全面的旋转成像技术，捕捉各向异性光学特性。数据集包含14,400张高分辨率图像，涵盖5种不同矿物，在平面偏振光（PPL）和交叉偏振光（XPL）下以5度增量进行360度旋转拍摄，为矿物学和岩石学研究提供了全面的光学表征资源。