K210图像检测&(1~8)数字卡片识别 |
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K210图像检测&(1~8)数字卡片识别
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前言
第一次使用该平台。想先找一个简单的识别，来走走流程。就想到了，前几年的送药小车的数字卡片识别。花了半天收集标记图片。在运行时要注意摄像头与数字卡片的高度。不过也有些不足，可能是收集某个数字的训练集的时候，拍摄高度，不一致(因为是手拍)，导致最终在同一高度下有个别数字，的识别可能低一点。 基于K210Bit开发板，MaixHub: AI 训练和分享平台和MaixPy IDE软件编译。网址： AI 训练和分享平台：https://maixhub.com/ 具体参数文章介绍：https://maixhub.com/model/zoo/218 工程链接：https://pan.baidu.com/s/1afhE_IAwn87fW_VEDrft4g 提取码：lypg 模型压缩包文件：1.main.py 2.model-54796.kmodel 3.report.json 三个文件夹，全丢SD卡里，在插上K210Bit，上电就能自动执行了。 代码因为我的板子屏幕要的屏幕要转动，完成串口发送和标签重命名，因为我之前的标签命名时以数字1之类来命名，但是在实际显示时汉字显示不出来就要重命名。为此我在原有的main.py的代码下增加下述修改。 原代码main.py # generated by maixhub, tested on maixpy3 v0.4.8 # copy files to TF card and plug into board and power on import sensor, image, lcd, time import KPU as kpu import gc, sys input_size = (224, 224) labels = ['数字1', '数字2', '数字3', '数字4', '数字5', '数字6', '数字7', '数字8'] anchors = [0.84, 1.22, 1.66, 2.34, 1.31, 1.75, 1.88, 2.59, 1.47, 2.09] def lcd_show_except(e): import uio err_str = uio.StringIO() sys.print_exception(e, err_str) err_str = err_str.getvalue() img = image.Image(size=input_size) img.draw_string(0, 10, err_str, scale=1, color=(0xff,0x00,0x00)) lcd.display(img) def main(anchors, labels = None, model_addr="/sd/m.kmodel", sensor_window=input_size, lcd_rotation=0, sensor_hmirror=False, sensor_vflip=False): sensor.reset() sensor.set_pixformat(sensor.RGB565) sensor.set_framesize(sensor.QVGA) sensor.set_windowing(sensor_window) sensor.set_hmirror(sensor_hmirror) sensor.set_vflip(sensor_vflip) sensor.run(1) lcd.init(type=1) lcd.rotation(lcd_rotation) lcd.clear(lcd.WHITE) if not labels: with open('labels.txt','r') as f: exec(f.read()) if not labels: print("no labels.txt") img = image.Image(size=(320, 240)) img.draw_string(90, 110, "no labels.txt", color=(255, 0, 0), scale=2) lcd.display(img) return 1 try: img = image.Image("startup.jpg") lcd.display(img) except Exception: img = image.Image(size=(320, 240)) img.draw_string(90, 110, "loading model...", color=(255, 255, 255), scale=2) lcd.display(img) try: task = None task = kpu.load(model_addr) kpu.init_yolo2(task, 0.5, 0.3, 5, anchors) # threshold:[0,1], nms_value: [0, 1] while(True): img = sensor.snapshot() t = time.ticks_ms() objects = kpu.run_yolo2(task, img) t = time.ticks_ms() - t if objects: for obj in objects: pos = obj.rect() img.draw_rectangle(pos) img.draw_string(pos[0], pos[1], "%s : %.2f" %(labels[obj.classid()], obj.value()), scale=2, color=(255, 0, 0)) img.draw_string(0, 200, "t:%dms" %(t), scale=2, color=(255, 0, 0)) lcd.display(img) except Exception as e: raise e finally: if not task is None: kpu.deinit(task) if __name__ == "__main__": try: # main(anchors = anchors, labels=labels, model_addr=0x300000, lcd_rotation=0) main(anchors = anchors, labels=labels, model_addr="/sd/model-54796.kmodel") except Exception as e: sys.print_exception(e) lcd_show_except(e) finally: gc.collect()修改后main.py 修改行数及作用 第8行，显示标签重命名第28行，屏幕显示旋转第64~66行，识别数字后简单的串口打印 # generated by maixhub, tested on maixpy3 v0.4.8 # copy files to TF card and plug into board and power on import sensor, image, lcd, time import KPU as kpu import gc, sys input_size = (224, 224) labels = ['1', '2', '3', '4', '5', '6', '7', '8'] anchors = [0.84, 1.22, 1.66, 2.34, 1.31, 1.75, 1.88, 2.59, 1.47, 2.09] def lcd_show_except(e): import uio err_str = uio.StringIO() sys.print_exception(e, err_str) err_str = err_str.getvalue() img = image.Image(size=input_size) img.draw_string(0, 10, err_str, scale=1, color=(0xff,0x00,0x00)) lcd.display(img) def main(anchors, labels = None, model_addr="/sd/m.kmodel", sensor_window=input_size, lcd_rotation=0, sensor_hmirror=False, sensor_vflip=False): sensor.reset() sensor.set_pixformat(sensor.RGB565) sensor.set_framesize(sensor.QVGA) sensor.set_windowing(sensor_window) sensor.set_hmirror(sensor_hmirror) sensor.set_vflip(sensor_vflip) sensor.run(1) sensor.set_vflip(1) #屏幕垂直翻转 lcd.init(type=1) lcd.rotation(lcd_rotation) lcd.clear(lcd.WHITE) if not labels: with open('labels.txt','r') as f: exec(f.read()) if not labels: print("no labels.txt") img = image.Image(size=(320, 240)) img.draw_string(90, 110, "no labels.txt", color=(255, 0, 0), scale=2) lcd.display(img) return 1 try: img = image.Image("startup.jpg") lcd.display(img) except Exception: img = image.Image(size=(320, 240)) img.draw_string(90, 110, "loading model...", color=(255, 255, 255), scale=2) lcd.display(img) try: task = None task = kpu.load(model_addr) kpu.init_yolo2(task, 0.5, 0.3, 5, anchors) # threshold:[0,1], nms_value: [0, 1] while(True): img = sensor.snapshot() t = time.ticks_ms() objects = kpu.run_yolo2(task, img) t = time.ticks_ms() - t if objects: for obj in objects: pos = obj.rect() img.draw_rectangle(pos) OutNum=labels[obj.classid()] img.draw_string(pos[0], pos[1], "%s : %.2f" %(OutNum, obj.value()), scale=2, color=(255, 0, 0)) print(OutNum) img.draw_string(0, 200, "t:%dms" %(t), scale=2, color=(255, 0, 0)) lcd.display(img) except Exception as e: raise e finally: if not task is None: kpu.deinit(task) if __name__ == "__main__": try: # main(anchors = anchors, labels=labels, model_addr=0x300000, lcd_rotation=0) main(anchors = anchors, labels=labels, model_addr="/sd/model-54796.kmodel") except Exception as e: sys.print_exception(e) lcd_show_except(e) finally: gc.collect() 代码现象
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