Xiaomi Redmi Note 13 Pro cam_app GPS TEST

NOTES.md

Redmi Note 13 Pro cam_app GPS TEST

• TODO

for jpg_photo in `ls *.jpg`; do
    raw_lat=$(identify -format '%[exif:GPSLatitude]' ${jpg_photo})
    raw_lon=$(identify -format '%[exif:GPSLongitude]' ${jpg_photo})
    
    lat=$(echo "$raw_lat" | while IFS="," read -r deg min sec; do echo "scale=6;$deg + $min /60 + $sec / 3600"| bc; done)
    lon=$(echo "$raw_lon" | while IFS="," read -r deg min sec; do echo "scale=6;$deg + $min /60 + $sec / 3600"| bc; done)

    #TEST:
    #echo "$jpg_photo,$lat,$lon"
    echo "${jpg_photo}, https://www.openstreetmap.org/?mlat=${lat}&mlon=${lon}&zoom=18"
done

NOTE: Imagemagick identify exif data format example:

mbohun@mamlas:~/pCloudDrive/fungi/Ramaria stricta, Trencianske Teplice, Slovakia > \
    identify -format '%[EXIF:*]' IMG_20240601_152533.jpg | grep GPS

exif:GPSAltitude=36580/100
exif:GPSAltitudeRef=.
exif:GPSDateStamp=2024:06:01
exif:GPSInfo=8532
exif:GPSLatitude=48/1,54/1,21827087/1000000
exif:GPSLatitudeRef=N
exif:GPSLongitude=18/1,11/1,17156066/1000000
exif:GPSLongitudeRef=E
exif:GPSProcessingMethod=GPS
exif:GPSTimeStamp=13/1,25/1,33/1
exif:GPSVersionID=....

photos_2_geojson.sh

#!/bin/bash                                                                                                                                                   
                                                                                                                                                              
FEATURES='[]'                                                                                                                                                 
                                                                                                                                                              
# NOTE: each photo is represented as a geojson Feature in the following format:                                                                               
#                                                                                                                                                             
# {                                                                                                                                                           
#     "id": 0,                                                                                                                                                
#     "type": "Feature",                                                                                                                                      
#     "geometry": {                                                                                                                                           
#         "coordinates": [                                                                                                                                    
#             18.197613,                                                                                                                                      
#             48.8985345                                                                                                                                      
#         ],                                                                                                                                                  
#         "type": "Point"                                                                                                                                     
#     },                                                                                                                                                      
#     "properties": {                                                                                                                                         
#         "photo": "IMG_20241024_173613.jpg",                                                                                                                 
#         "timestamp": 1730048732                                                                                                                             
#     }                                                                                                                                                       
# }                                                                                                                                                           
#                                                                                                                                                             
                                                                                                                                                              
# NOTE:                                                                                                                                                       
counter_id=0                                                                                                                                                  
                                                                                                                                                              
for jpg_photo in `ls *.jpg`; do                                                                                                                               
    echo "processing geojson feature id: ${counter_id}"                                                                                                       
                                                                                                                                                              
    raw_lat=$(identify -format '%[exif:GPSLatitude]' ${jpg_photo})                                                                                            
    raw_lon=$(identify -format '%[exif:GPSLongitude]' ${jpg_photo})                                                                                           
                                                                                                                                                              
    lat=$(echo "$raw_lat" | while IFS="," read -r deg min sec; do echo "scale=6;$deg + $min /60 + $sec / 3600"| bc; done)                                     
    lon=$(echo "$raw_lon" | while IFS="," read -r deg min sec; do echo "scale=6;$deg + $min /60 + $sec / 3600"| bc; done)                                     

    FEATURES=$(echo '{ "id": '${counter_id}', "type": "Feature", "geometry": { "coordinates": ['${lon},${lat}'], "type": "Point"}, "properties": { "photo": "\
'${jpg_photo}'" } }' | jq --argjson features "$FEATURES" '$features + [.]')                                                                                   
                                                                                                                                                              
    counter_id=$((counter_id + 1))                                                                                                                            
done                                                                                                                                                          
                                                                                                                                                              
echo '{ "type": "FeatureCollection" }' \                                                                                                                      
    | jq --argjson features "$FEATURES" '.["features"]=$features' > album.geojson

GEOJSON Polygon test

{
      "type": "Feature",
      "properties": {},
      "geometry": {
        "coordinates": [
          [
            [
              18.18652154778826,
              48.90401309469868
            ],
            [
              18.18669787196461,
              48.90384400281701
            ],
            [
              18.18672594648669,
              48.9034477954784
            ],
            [
              18.186786312180686,
              48.90342456377698
            ],
            [
              18.186838208449956,
              48.903576868936256
            ],
            [
              18.187140059981374,
              48.903850544716335
            ],
            [
              18.187094765148856,
              48.90410152529216
            ],
            [
              18.186927512776492,
              48.90420496405508
            ],
            [
              18.186629983202153,
              48.90415607154813
            ],
            [
              18.18652154778826,
              48.90401309469868
            ]
          ]
        ],
        "type": "Polygon"
      }
    }