本文的主要目的是在PIE中使用代码完成Landsat 8的去云工作, 这里我们首先查看一下我们所需要的影像数据:
QA_PIXEL |
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QA Bitmask |
Bitmask for BQA |
- Bit 0: Designated Fill
- Bit 1: Terrain Occlusion
- Bits 2-3: Radiometric Saturation
- 0: No bands contain saturation
- 1: 1-2 bands contain saturation
- 2: 3-4 bands contain saturation
- 3: 5 or more bands contain saturation
- Bit 4: Cloud
- Bits 5-6: Cloud Confidence
- 0: Not Determined / Condition does not exist.
- 1: Low, (0-33 percent confidence)
- 2: Medium, (34-66 percent confidence)
- 3: High, (67-100 percent confidence)
- Bit
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