GEE: Landsat 7ETM+ the simplest strip repair solution (use of focal_ function)

The Landsat 7 band fault was caused by a malfunction of the scanner on the satellite. Specifically, the satellite scanner's scanline sensor malfunctioned, causing missing bands of data to appear on one side of each image, as the satellites failed to acquire complete data as they scanned the Earth's surface.

To deal with Landsat 7 banding faults, one of two methods can be used:

1. Use other satellite data sources: In addition to Landsat 7, there are other satellite data sources available, such as Landsat 8, Sentinel-2, etc. These satellites provide high-quality remote sensing imagery data that can be used to replace Landsat 7 data.

2. Use remote sensing image processing software: The remote sensing image processing software can fill in the missing data caused by Landsat 7 band faults through interpolation algorithm. These software can extrapolate missing data from existing data and generate a complete picture. Some commonly used remote sensing image processing software include ENVI, ERDAS, etc.

The previous landsat 7 strip processing method:

(1249 messages) Google Earth Engine (GEE)——Landsat7 strip removal two schemes_gee landsat to strip_This star bright blog-CSDN blog

In fact, we can choose the correct synthesis method for re-synthesis, first look at one of the following repair methods:

code:

var roi = 
    /* color: #d63000 */
    /* displayProperties: [
      {
        "type": "