例程讲解-04-vflip_hmirror_transpose 垂直水平镜像转置图像
# 垂直翻转 - 水平镜像 - 转置图像
#
# 此示例显示如何垂直翻转,水平镜像或转置图像。
# 注意:
# vflip=False, hmirror=False, transpose=False -> 0 degree rotation
# vflip=True, hmirror=False, transpose=True -> 90 degree rotation
# vflip=True, hmirror=True, transpose=False -> 180 degree rotation
# vflip=False, hmirror=True, transpose=True -> 270 degree rotation
import sensor
import time
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.skip_frames(time=2000)
clock = time.clock()
ticks = time.ticks_ms()
counter = 0
while True:
clock.tick()
img = sensor.snapshot().replace(
vflip=(counter // 2) % 2,
hmirror=(counter // 4) % 2,
transpose=(counter // 8) % 2,
)
if time.ticks_diff(time.ticks_ms(), ticks) > 1000:
ticks = time.ticks_ms()
counter += 1
print(clock.fps())