ENVI is software for processing and analyzing geospatial imagery. ENVI handles hyperspectral, LiDAR, and other remotely sensed data sets easily with both wizard-based approaches and allowing users to program operations.
in this comprehensive video we've completely covered the most applicable, common, and essential topics in the ENVI software including Image Pre-Processing steps such as radiometric and atmospheric corrections, working with Thermal bands and processing them, applying different water indices, vegetation indices, Mosaic, PCA, supervised and unsupervised Classification and so many things.
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▶ Topics in detail includes:
00:00 - Introduction to ENVI
00:18 - Pre-Processing Landsat 8 Image
02:10 - Radiometric Calibration Landsat 8
04:23 - FLAASH Atmospheric Correction in ENVI
12:18 - Surface Reflectance
14:26 - Pre-Processing Thermal bands
14:37 - Radiance Thermal Bands
15:43 - Brightness Temperature
16:28 - Thermal Atmospheric Calibration
17:10 - Estimating Land Surface Temperature Landsat 8 in ENVI
19:45 - Water Indices
19:52 - Normalized Difference Water Index (NDWI)
21:18 - Water Ratio Index (WRI)
22:20 - Automated Water Extraction Index no shadow (AWEI_nsh)
23:43 - Vegetation Indices
23:47 - NDVI Index
24:36 - Ratio Vegetation Index (RVI)
25:03 - Enhanced Vegetation Index (EVI)
26:21 - Soil Adjusted Vegetation Index (SAVI)
27:51 - Spectral Library Viewer
29:09 - Draw profiles (spectral)
30:10 - Band Animation in ENVI
31:04 - Portal
31:54 - View Blend
32:07 - View Flicker
32:16 - View Swipe
32:39 - Apply filter using Landsat 8
35:35 - Anomaly Detection
37:35 - Image Classification in ENVI
37:42 - Training samples
39:25 - Landsat 8 Classification in ENVI
40:22 - Accuracy Assessment
43:32 - Apply PCA in ENVI
45:21 - Extract Texture in ENVI
48:39 - Image Sharpening
51:46 - Unsupervised Classification
51:54 - Iso data classification
53:01 - K-Means Classification
53:53 - Mosaic Landsat 8 Images

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Surely this video is a Full Course and a complete beginner's guide to ENVI and Landsat 8 that contains everything you may need. it is applicable for beginners, primary education and even advanced users. Moreover Everything has been applied to the Landsat-8 images entire the video to be a base for you. By following the video you can utilize the same steps for other images if you need.
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Check the video out. if you have questions about the video, ask in the comments.
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A complete beginner's guide to ENVI using Landsat 8 image - ENVI full course video
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