代码收藏家 【究极缝合】Jeston Nano环境配置+部署yolov5(master)+Tensorrt加速+usb摄像头测试
一、准备
安装Nano镜像，配置Nano环境省略
#0、安装镜像
https://qianbin.blog.csdn.net/article/details/103760640
#1、开启风扇，开机自启动
https://blog.csdn.net/qq_33287871/article/details/113785879
#2、配置cuda的path加入bashrc
https://blog.csdn.net/liyuanjunfrank/article/details/121897903
#3、安装Jtop
https://yeping.blog.csdn.net/article/details/117749636
#4、安装torch1.7+torchvison0.8
https://blog.csdn.net/weixin_45709671/article/details/108909668
https://blog.csdn.net/chencaw/article/details/117902535
增加nano的虚拟内存
在运行某些程序时，会卡死，提前增加swap内存
#1）新增swapfile文件大小自定义
sudo fallocate -l 6G /var/swapfile
#2）配置该文件的权限
sudo chmod 600 /var/swapfile
#3）建立交换分区
sudo mkswap /var/swapfile
#4）启用交换分区
sudo swapon /var/swapfile
#5）自启动启用
sudo bash -c 'echo "/var/swapfile swap swap defaults 0 0" >> /etc/fstab'
二、开始部署
主要参考:
配置YOLOV5运行所需要的包，非常耗时
https://blog.csdn.net/IamYZD/article/details/119618950最后在yolov5文件夹下运行
sudo python3 detect --source 0
大约是6.6帧
三、TensorRT加速
https://blog.csdn.net/weixin_46716951/article/details/123742902
https://blog.csdn.net/qq_40691868/article/details/1173311620、安装pycuda
https://blog.csdn.net/weixin_44501699/article/details/106470671
1、克隆代码
yolov5(之前已经下好了)
git clone https://github.com/ultralytics/yolov5.gitensorRT
git clone https://github.com/wang-xinyu/tensorrtx.git
2、转换模型
#1、把tensorrt/yolov5下的gen_wts.py复制到yolov5的文件夹下
#2、执行gen_wts.py生成.wts文件。
python gen_wts.py yolov5s.pt
#3、接下来去到目录tensorrtx下的yolov5文件夹
老规矩，创建一个build文件,并生成生成makeFilemkdir build cd build cmake ..#4、将yololayer.h里的CLASS_NUM修改成你的。因为官方用的是coco数据集，所以默认是80。
#5、执行makeFile。（每次修改为CLASS_NUM都要make一次）
make#6、将上一步生成的.wts文件复制到tensorrtx/yolov5里。
#7、生成.engine文件（我用的是yolov5s，所以结尾用s）(在build命令行)
sudo ./yolov5 -s ../yolov5s.wts yolov5s.engine s 如果你训练时是自定义depth_multiple 和 width_multiple就这样写： sudo ./yolov5 -s ../yolov5.wts yolov5.engine c 0.17 0.25 在tensorrtx 5.0里也更新了yolov5的P6模型： sudo ./yolov5 -s ../yolov5.wts yolov5.engine s6#8、用他自带的图片(在samples里有两张图片)测试一下
sudo ./yolov5 -d yolov5s.engine ../samples
#9、运行yoloV5_trt.py测试是否成功
sudo python3 yolov5_trt.py
记得加sudo不然可能没权限会报错
最后会创建output文件夹生成检测完成的图片
#10、调用usb摄像头测试TensorRT加速yoloV5
"""
An example that uses TensorRT's Python api to make inferences.
"""
import ctypes
import os
import shutil
import random
import sys
import threading
import time
import cv2
import numpy as np
import pycuda.autoinit
import pycuda.driver as cuda
import tensorrt as trt
import torch
import torchvision
import argparse
CONF_THRESH = 0.5
IOU_THRESHOLD = 0.4
def get_img_path_batches(batch_size, img_dir):
ret = []
batch = []
for root, dirs, files in os.walk(img_dir):
for name in files:
if len(batch) == batch_size:
ret.append(batch)
batch = []
batch.append(os.path.join(root, name))
if len(batch) > 0:
ret.append(batch)
return ret
def plot_one_box(x, img, color=None, label=None, line_thickness=None):
"""
description: Plots one bounding box on image img,
this function comes from YoLov5 project.
param:
x: a box likes [x1,y1,x2,y2]
img: a opencv image object
color: color to draw rectangle, such as (0,255,0)
label: str
line_thickness: int
return:
no return
"""
tl = (
line_thickness or round(0.002 * (img.shape[0] + img.shape[1]) / 2) + 1
) # line/font thickness
color = color or [random.randint(0, 255) for _ in range(3)]
c1, c2 = (int(x[0]), int(x[1])), (int(x[2]), int(x[3]))
cv2.rectangle(img, c1, c2, color, thickness=tl, lineType=cv2.LINE_AA)
if label:
tf = max(tl - 1, 1) # font thickness
t_size = cv2.getTextSize(label, 0, fontScale=tl / 3, thickness=tf)[0]
c2 = c1[0] + t_size[0], c1[1] - t_size[1] - 3
cv2.rectangle(img, c1, c2, color, -1, cv2.LINE_AA) # filled
cv2.putText(
img,
label,
(c1[0], c1[1] - 2),
0,
tl / 3,
[225, 255, 255],
thickness=tf,
lineType=cv2.LINE_AA,
)
class YoLov5TRT(object):
"""
description: A YOLOv5 class that warps TensorRT ops, preprocess and postprocess ops.
"""
def __init__(self, engine_file_path):
# Create a Context on this device,
self.ctx = cuda.Device(0).make_context()
stream = cuda.Stream()
TRT_LOGGER = trt.Logger(trt.Logger.INFO)
runtime = trt.Runtime(TRT_LOGGER)
# Deserialize the engine from file
with open(engine_file_path, "rb") as f:
engine = runtime.deserialize_cuda_engine(f.read())
context = engine.create_execution_context()
host_inputs = []
cuda_inputs = []
host_outputs = []
cuda_outputs = []
bindings = []
for binding in engine:
print('bingding:', binding, engine.get_binding_shape(binding))
size = trt.volume(engine.get_binding_shape(binding)) * engine.max_batch_size
dtype = trt.nptype(engine.get_binding_dtype(binding))
# Allocate host and device buffers
host_mem = cuda.pagelocked_empty(size, dtype)
cuda_mem = cuda.mem_alloc(host_mem.nbytes)
# Append the device buffer to device bindings.
bindings.append(int(cuda_mem))
# Append to the appropriate list.
if engine.binding_is_input(binding):
self.input_w = engine.get_binding_shape(binding)[-1]
self.input_h = engine.get_binding_shape(binding)[-2]
host_inputs.append(host_mem)
cuda_inputs.append(cuda_mem)
else:
host_outputs.append(host_mem)
cuda_outputs.append(cuda_mem)
# Store
self.stream = stream
self.context = context
self.engine = engine
self.host_inputs = host_inputs
self.cuda_inputs = cuda_inputs
self.host_outputs = host_outputs
self.cuda_outputs = cuda_outputs
self.bindings = bindings
self.batch_size = engine.max_batch_size
def infer(self, input_image_path):
threading.Thread.__init__(self)
# Make self the active context, pushing it on top of the context stack.
self.ctx.push()
self.input_image_path = input_image_path
# Restore
stream = self.stream
context = self.context
engine = self.engine
host_inputs = self.host_inputs
cuda_inputs = self.cuda_inputs
host_outputs = self.host_outputs
cuda_outputs = self.cuda_outputs
bindings = self.bindings
# Do image preprocess
batch_image_raw = []
batch_origin_h = []
batch_origin_w = []
batch_input_image = np.empty(shape=[self.batch_size, 3, self.input_h, self.input_w])
input_image, image_raw, origin_h, origin_w = self.preprocess_image(input_image_path
)
batch_origin_h.append(origin_h)
batch_origin_w.append(origin_w)
np.copyto(batch_input_image, input_image)
batch_input_image = np.ascontiguousarray(batch_input_image)
# Copy input image to host buffer
np.copyto(host_inputs[0], batch_input_image.ravel())
start = time.time()
# Transfer input data to the GPU.
cuda.memcpy_htod_async(cuda_inputs[0], host_inputs[0], stream)
# Run inference.
context.execute_async(batch_size=self.batch_size, bindings=bindings, stream_handle=stream.handle)
# Transfer predictions back from the GPU.
cuda.memcpy_dtoh_async(host_outputs[0], cuda_outputs[0], stream)
# Synchronize the stream
stream.synchronize()
end = time.time()
# Remove any context from the top of the context stack, deactivating it.
self.ctx.pop()
# Here we use the first row of output in that batch_size = 1
output = host_outputs[0]
# Do postprocess
result_boxes, result_scores, result_classid = self.post_process(
output, origin_h, origin_w)
# Draw rectangles and labels on the original image
for j in range(len(result_boxes)):
box = result_boxes[j]
plot_one_box(
box,
image_raw,
label="{}:{:.2f}".format(
categories[int(result_classid[j])], result_scores[j]
),
)
return image_raw, end - start
def destroy(self):
# Remove any context from the top of the context stack, deactivating it.
self.ctx.pop()
def get_raw_image(self, image_path_batch):
"""
description: Read an image from image path
"""
for img_path in image_path_batch:
yield cv2.imread(img_path)
def get_raw_image_zeros(self, image_path_batch=None):
"""
description: Ready data for warmup
"""
for _ in range(self.batch_size):
yield np.zeros([self.input_h, self.input_w, 3], dtype=np.uint8)
def preprocess_image(self, input_image_path):
"""
description: Convert BGR image to RGB,
resize and pad it to target size, normalize to [0,1],
transform to NCHW format.
param:
input_image_path: str, image path
return:
image: the processed image
image_raw: the original image
h: original height
w: original width
"""
image_raw = input_image_path
h, w, c = image_raw.shape
image = cv2.cvtColor(image_raw, cv2.COLOR_BGR2RGB)
# Calculate widht and height and paddings
r_w = self.input_w / w
r_h = self.input_h / h
if r_h > r_w:
tw = self.input_w
th = int(r_w * h)
tx1 = tx2 = 0
ty1 = int((self.input_h - th) / 2)
ty2 = self.input_h - th - ty1
else:
tw = int(r_h * w)
th = self.input_h
tx1 = int((self.input_w - tw) / 2)
tx2 = self.input_w - tw - tx1
ty1 = ty2 = 0
# Resize the image with long side while maintaining ratio
image = cv2.resize(image, (tw, th))
# Pad the short side with (128,128,128)
image = cv2.copyMakeBorder(
image, ty1, ty2, tx1, tx2, cv2.BORDER_CONSTANT, (128, 128, 128)
)
image = image.astype(np.float32)
# Normalize to [0,1]
image /= 255.0
# HWC to CHW format:
image = np.transpose(image, [2, 0, 1])
# CHW to NCHW format
image = np.expand_dims(image, axis=0)
# Convert the image to row-major order, also known as "C order":
image = np.ascontiguousarray(image)
return image, image_raw, h, w
def xywh2xyxy(self, origin_h, origin_w, x):
"""
description: Convert nx4 boxes from [x, y, w, h] to [x1, y1, x2, y2] where xy1=top-left, xy2=bottom-right
param:
origin_h: height of original image
origin_w: width of original image
x: A boxes tensor, each row is a box [center_x, center_y, w, h]
return:
y: A boxes tensor, each row is a box [x1, y1, x2, y2]
"""
y = torch.zeros_like(x) if isinstance(x, torch.Tensor) else np.zeros_like(x)
r_w = self.input_w / origin_w
r_h = self.input_h / origin_h
if r_h > r_w:
y[:, 0] = x[:, 0] - x[:, 2] / 2
y[:, 2] = x[:, 0] + x[:, 2] / 2
y[:, 1] = x[:, 1] - x[:, 3] / 2 - (self.input_h - r_w * origin_h) / 2
y[:, 3] = x[:, 1] + x[:, 3] / 2 - (self.input_h - r_w * origin_h) / 2
y /= r_w
else:
y[:, 0] = x[:, 0] - x[:, 2] / 2 - (self.input_w - r_h * origin_w) / 2
y[:, 2] = x[:, 0] + x[:, 2] / 2 - (self.input_w - r_h * origin_w) / 2
y[:, 1] = x[:, 1] - x[:, 3] / 2
y[:, 3] = x[:, 1] + x[:, 3] / 2
y /= r_h
return y
def post_process(self, output, origin_h, origin_w):
"""
description: postprocess the prediction
param:
output: A tensor likes [num_boxes,cx,cy,w,h,conf,cls_id, cx,cy,w,h,conf,cls_id, ...]
origin_h: height of original image
origin_w: width of original image
return:
result_boxes: finally boxes, a boxes tensor, each row is a box [x1, y1, x2, y2]
result_scores: finally scores, a tensor, each element is the score correspoing to box
result_classid: finally classid, a tensor, each element is the classid correspoing to box
"""
# Get the num of boxes detected
num = int(output[0])
# Reshape to a two dimentional ndarray
pred = np.reshape(output[1:], (-1, 6))[:num, :]
# to a torch Tensor
pred = torch.Tensor(pred).cuda()
# Get the boxes
boxes = pred[:, :4]
# Get the scores
scores = pred[:, 4]
# Get the classid
classid = pred[:, 5]
# Choose those boxes that score > CONF_THRESH
si = scores > CONF_THRESH
boxes = boxes[si, :]
scores = scores[si]
classid = classid[si]
# Trandform bbox from [center_x, center_y, w, h] to [x1, y1, x2, y2]
boxes = self.xywh2xyxy(origin_h, origin_w, boxes)
# Do nms
indices = torchvision.ops.nms(boxes, scores, iou_threshold=IOU_THRESHOLD).cpu()
result_boxes = boxes[indices, :].cpu()
result_scores = scores[indices].cpu()
result_classid = classid[indices].cpu()
return result_boxes, result_scores, result_classid
class inferThread(threading.Thread):
def __init__(self, yolov5_wrapper):
threading.Thread.__init__(self)
self.yolov5_wrapper = yolov5_wrapper
def infer(self , frame):
batch_image_raw, use_time = self.yolov5_wrapper.infer(frame)
# for i, img_path in enumerate(self.image_path_batch):
# parent, filename = os.path.split(img_path)
# save_name = os.path.join('output', filename)
# # Save image
# cv2.imwrite(save_name, batch_image_raw[i])
# print('input->{}, time->{:.2f}ms, saving into output/'.format(self.image_path_batch, use_time * 1000))
return batch_image_raw,use_time
class warmUpThread(threading.Thread):
def __init__(self, yolov5_wrapper):
threading.Thread.__init__(self)
self.yolov5_wrapper = yolov5_wrapper
def run(self):
batch_image_raw, use_time = self.yolov5_wrapper.infer(self.yolov5_wrapper.get_raw_image_zeros())
print('warm_up->{}, time->{:.2f}ms'.format(batch_image_raw[0].shape, use_time * 1000))
if __name__ == "__main__":
# load custom plugins
parser = argparse.ArgumentParser()
parser.add_argument('--engine', nargs='+', type=str, default="build/yolov5s.engine", help='.engine path(s)')
parser.add_argument('--save', type=int, default=0, help='save?')
opt = parser.parse_args()
PLUGIN_LIBRARY = "build/libmyplugins.so"
engine_file_path = opt.engine
ctypes.CDLL(PLUGIN_LIBRARY)
# load coco labels
categories = ["person", "bicycle", "car", "motorcycle", "airplane", "bus", "train", "truck", "boat", "traffic light",
"fire hydrant", "stop sign", "parking meter", "bench", "bird", "cat", "dog", "horse", "sheep", "cow",
"elephant", "bear", "zebra", "giraffe", "backpack", "umbrella", "handbag", "tie", "suitcase", "frisbee",
"skis", "snowboard", "sports ball", "kite", "baseball bat", "baseball glove", "skateboard", "surfboard",
"tennis racket", "bottle", "wine glass", "cup", "fork", "knife", "spoon", "bowl", "banana", "apple",
"sandwich", "orange", "broccoli", "carrot", "hot dog", "pizza", "donut", "cake", "chair", "couch",
"potted plant", "bed", "dining table", "toilet", "tv", "laptop", "mouse", "remote", "keyboard", "cell phone",
"microwave", "oven", "toaster", "sink", "refrigerator", "book", "clock", "vase", "scissors", "teddy bear",
"hair drier", "toothbrush"]
# a YoLov5TRT instance
yolov5_wrapper = YoLov5TRT(engine_file_path)
cap = cv2.VideoCapture(0)
try:
thread1 = inferThread(yolov5_wrapper)
thread1.start()
thread1.join()
while 1:
_,frame = cap.read()
img,t=thread1.infer(frame)
fps = 1/t #显示帧率
imgout = cv2.putText(img, "FPS= %.2f" % (fps), (0, 40), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 255, 0), 2)
cv2.imshow("result", img)
if cv2.waitKey(1) & 0XFF == ord('q'): # 1 millisecond
break
finally:
# destroy the instance
cap.release()
cv2.destroyAllWindows()
yolov5_wrapper.destroy() 未加速的结果FPS=1/0.15=6.6帧
加速后的FPS达到14
来源：鱼鱼症患者
