=== 4-channel (pixel4) test ===
Result length: 4
result[0] = 52.5
result[1] = 61.5
result[2] = 8
result[3] = 99.25
=== 3-channel (pixel3) test ===
Result length: 3
result[0] = 52.5
result[1] = 61.5
result[2] = 8
