PowLu/TencentOS-tiny
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge pull request #270 from yangqings/master

Browse Source 
增加Tensorflow Lite Micro组件和行人检测Demo
This commit is contained in:
Supowang
2021-01-06 16:22:11 +08:00
committed by GitHub
parent 463b69c1de b25643e8c8
commit 206814bdbc
868 changed files with 307648 additions and 208 deletions
Download Patch File Download Diff File Expand all files Collapse all files

80
examples/tflitemicro_person_detection/tflitemicro_person_detection.c Normal file
View File

@@ -0,0 +1,80 @@
/**
* @file tflitemicro_person_detection.c
* @author Derekduke (dkeji627@gmail.com); QingChuanWS (bingshan45@163.com); yangqings (yangqingsheng12@outlook.com)
* @brief Person detection example based on TencentOS-Tiny and TFlite_Micro.
* @version 0.1
* @date 2021-01-05
* @copyright Copyright (c) 2021
*
*/
#include "cmsis_os.h"
#include "mcu_init.h"
extern uint16_t camera_buffer[];
extern uint8_t frame_flag;
static uint8_t model_buffer[96*96];
#define TASK1_STK_SIZE 1024
void task1(void *arg);
osThreadDef(task1, osPriorityNormal, 1, TASK1_STK_SIZE);
#define TASK2_STK_SIZE 1024
void task2(void *arg);
osThreadDef(task2, osPriorityNormal, 1, TASK2_STK_SIZE);
uint8_t rgb565_to_gray(uint16_t bg_color)
{
uint8_t bg_r = 0;
uint8_t bg_g = 0;
uint8_t bg_b = 0;
bg_r = ((bg_color>>11)&0xff)<<3;
bg_g = ((bg_color>>5)&0x3f)<<2;
bg_b = (bg_color&0x1f)<<2;
uint8_t gray = (bg_r*299 + bg_g*587 + bg_b*114 + 500) / 1000;
return gray;
}
void input_convert(uint16_t* camera_buffer , uint8_t* model_buffer)
{
for(int i=0 ; i<OV2640_PIXEL_WIDTH*OV2640_PIXEL_HEIGHT ; i++)
{
model_buffer[i] = rgb565_to_gray(camera_buffer[i]);
}
}
void task1(void *arg)
{
while (1) {
if(frame_flag == 1){
printf("*person_detect_task\r\n");
if(HAL_DCMI_Stop(&hdcmi))Error_Handler(); //stop DCMI
input_convert(camera_buffer,model_buffer);
person_detect(model_buffer);
LCD_2IN4_Display(camera_buffer,OV2640_PIXEL_WIDTH,OV2640_PIXEL_HEIGHT);
frame_flag = 0;
if(HAL_DCMI_Start_DMA(&hdcmi,DCMI_MODE_CONTINUOUS,(uint32_t)camera_buffer ,\
(OV2640_PIXEL_WIDTH*OV2640_PIXEL_HEIGHT)/2))Error_Handler(); //restart DCMI
}
osDelay(50);
}
}
void task2(void *arg)
{
while (1) {
//printf("***task2\r\n");
osDelay(200);
}
}
void application_entry(void *arg)
{
printf("***Start person detection task! \r\n");
osThreadCreate(osThread(task1), NULL); // Create task1
osThreadCreate(osThread(task2), NULL); // Create task2
}

25
examples/tflitemicro_person_detection/tflu_person_detection/detection_responder.cc Normal file
View File

@@ -0,0 +1,25 @@
/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
#include "tensorflow/lite/micro/examples/person_detection_experimental/detection_responder.h"
// This dummy implementation writes person and no person scores to the error
// console. Real applications will want to take some custom action instead, and
// should implement their own versions of this function.
void RespondToDetection(tflite::ErrorReporter* error_reporter,
int8_t person_score, int8_t no_person_score) {
TF_LITE_REPORT_ERROR(error_reporter, "person score:%d no person score %d",
person_score, no_person_score);
}

34
examples/tflitemicro_person_detection/tflu_person_detection/detection_responder.h Normal file
View File

@@ -0,0 +1,34 @@
/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
// Provides an interface to take an action based on the output from the person
// detection model.
#ifndef TENSORFLOW_LITE_MICRO_EXAMPLES_PERSON_DETECTION_EXPERIMENTAL_DETECTION_RESPONDER_H_
#define TENSORFLOW_LITE_MICRO_EXAMPLES_PERSON_DETECTION_EXPERIMENTAL_DETECTION_RESPONDER_H_
#include "tensorflow/lite/c/common.h"
#include "tensorflow/lite/micro/micro_error_reporter.h"
// Called every time the results of a person detection run are available. The
// `person_score` has the numerical confidence that the captured image contains
// a person, and `no_person_score` has the numerical confidence that the image
// does not contain a person. Typically if person_score > no person score, the
// image is considered to contain a person. This threshold may be adjusted for
// particular applications.
void RespondToDetection(tflite::ErrorReporter* error_reporter,
int8_t person_score, int8_t no_person_score);
#endif // TENSORFLOW_LITE_MICRO_EXAMPLES_PERSON_DETECTION_EXPERIMENTAL_DETECTION_RESPONDER_H_

26
examples/tflitemicro_person_detection/tflu_person_detection/image_provider.cc Normal file
View File

@@ -0,0 +1,26 @@
/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
#include "tensorflow/lite/micro/examples/person_detection_experimental/image_provider.h"
#include "tensorflow/lite/micro/examples/person_detection_experimental/model_settings.h"
TfLiteStatus GetImage(tflite::ErrorReporter* error_reporter, int image_width,
int image_height, int channels, int8_t* image_data,
uint8_t * hardware_input) {
for (int i = 0; i < image_width * image_height * channels; ++i) {
image_data[i] = hardware_input[i];
}
return kTfLiteOk;
}

40
examples/tflitemicro_person_detection/tflu_person_detection/image_provider.h Normal file
View File

@@ -0,0 +1,40 @@
/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
#ifndef TENSORFLOW_LITE_MICRO_EXAMPLES_PERSON_DETECTION_EXPERIMENTAL_IMAGE_PROVIDER_H_
#define TENSORFLOW_LITE_MICRO_EXAMPLES_PERSON_DETECTION_EXPERIMENTAL_IMAGE_PROVIDER_H_
#include "tensorflow/lite/c/common.h"
#include "tensorflow/lite/micro/micro_error_reporter.h"
// This is an abstraction around an image source like a camera, and is
// expected to return 8-bit sample data. The assumption is that this will be
// called in a low duty-cycle fashion in a low-power application. In these
// cases, the imaging sensor need not be run in a streaming mode, but rather can
// be idled in a relatively low-power mode between calls to GetImage(). The
// assumption is that the overhead and time of bringing the low-power sensor out
// of this standby mode is commensurate with the expected duty cycle of the
// application. The underlying sensor may actually be put into a streaming
// configuration, but the image buffer provided to GetImage should not be
// overwritten by the driver code until the next call to GetImage();
//
// The reference implementation can have no platform-specific dependencies, so
// it just returns a static image. For real applications, you should
// ensure there's a specialized implementation that accesses hardware APIs.
TfLiteStatus GetImage(tflite::ErrorReporter* error_reporter, int image_width,
int image_height, int channels, int8_t* image_data,
uint8_t * hardware_input);
#endif // TENSORFLOW_LITE_MICRO_EXAMPLES_PERSON_DETECTION_EXPERIMENTAL_IMAGE_PROVIDER_H_

119
examples/tflitemicro_person_detection/tflu_person_detection/main_functions.cc Normal file
View File

@@ -0,0 +1,119 @@
/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
#include "tensorflow/lite/micro/examples/person_detection_experimental/main_functions.h"
#include "tensorflow/lite/micro/examples/person_detection_experimental/detection_responder.h"
#include "tensorflow/lite/micro/examples/person_detection_experimental/image_provider.h"
#include "tensorflow/lite/micro/examples/person_detection_experimental/model_settings.h"
#include "tensorflow/lite/micro/examples/person_detection_experimental/person_detect_model_data.h"
#include "tensorflow/lite/micro/micro_error_reporter.h"
#include "tensorflow/lite/micro/micro_interpreter.h"
#include "tensorflow/lite/micro/micro_mutable_op_resolver.h"
#include "tensorflow/lite/schema/schema_generated.h"
#include "tensorflow/lite/version.h"
// Globals, used for compatibility with Arduino-style sketches.
namespace {
tflite::ErrorReporter* error_reporter = nullptr;
const tflite::Model* model = nullptr;
tflite::MicroInterpreter* interpreter = nullptr;
TfLiteTensor* input = nullptr;
// In order to use optimized tensorflow lite kernels, a signed int8_t quantized
// model is preferred over the legacy unsigned model format. This means that
// throughout this project, input images must be converted from unisgned to
// signed format. The easiest and quickest way to convert from unsigned to
// signed 8-bit integers is to subtract 128 from the unsigned value to get a
// signed value.
// An area of memory to use for input, output, and intermediate arrays.
constexpr int kTensorArenaSize = 115 * 1024;
static uint8_t tensor_arena[kTensorArenaSize];
} // namespace
// The name of this function is important for Arduino compatibility.
void person_detect_init() {
// Set up logging. Google style is to avoid globals or statics because of
// lifetime uncertainty, but since this has a trivial destructor it's okay.
// NOLINTNEXTLINE(runtime-global-variables)
static tflite::MicroErrorReporter micro_error_reporter;
error_reporter = &micro_error_reporter;
// Map the model into a usable data structure. This doesn't involve any
// copying or parsing, it's a very lightweight operation.
model = tflite::GetModel(g_person_detect_model_data);
if (model->version() != TFLITE_SCHEMA_VERSION) {
TF_LITE_REPORT_ERROR(error_reporter,
"Model provided is schema version %d not equal "
"to supported version %d.",
model->version(), TFLITE_SCHEMA_VERSION);
return;
}
// Pull in only the operation implementations we need.
// This relies on a complete list of all the ops needed by this graph.
// An easier approach is to just use the AllOpsResolver, but this will
// incur some penalty in code space for op implementations that are not
// needed by this graph.
//
// tflite::AllOpsResolver resolver;
// NOLINTNEXTLINE(runtime-global-variables)
static tflite::MicroMutableOpResolver<5> micro_op_resolver;
micro_op_resolver.AddAveragePool2D();
micro_op_resolver.AddConv2D();
micro_op_resolver.AddDepthwiseConv2D();
micro_op_resolver.AddReshape();
micro_op_resolver.AddSoftmax();
// Build an interpreter to run the model with.
// NOLINTNEXTLINE(runtime-global-variables)
static tflite::MicroInterpreter static_interpreter(
model, micro_op_resolver, tensor_arena, kTensorArenaSize, error_reporter);
interpreter = &static_interpreter;
// Allocate memory from the tensor_arena for the model's tensors.
TfLiteStatus allocate_status = interpreter->AllocateTensors();
if (allocate_status != kTfLiteOk) {
TF_LITE_REPORT_ERROR(error_reporter, "AllocateTensors() failed");
return;
}
// Get information about the memory area to use for the model's input.
input = interpreter->input(0);
}
// The name of this function is important for Arduino compatibility.
int person_detect(uint8_t * hardware_input) {
// Get image from provider.
if (kTfLiteOk != GetImage(error_reporter, kNumCols, kNumRows, kNumChannels,
input->data.int8, hardware_input)) {
TF_LITE_REPORT_ERROR(error_reporter, "Image capture failed.");
}
// Run the model on this input and make sure it succeeds.
if (kTfLiteOk != interpreter->Invoke()) {
TF_LITE_REPORT_ERROR(error_reporter, "Invoke failed.");
}
TfLiteTensor* output = interpreter->output(0);
// Process the inference results.
int8_t person_score = output->data.uint8[kPersonIndex];
int8_t no_person_score = output->data.uint8[kNotAPersonIndex];
RespondToDetection(error_reporter, person_score, no_person_score);
if(person_score >= no_person_score + 50) return 1;
else return 0;
}

30
examples/tflitemicro_person_detection/tflu_person_detection/main_functions.h Normal file
View File

@@ -0,0 +1,30 @@
/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
#ifndef TENSORFLOW_LITE_MICRO_EXAMPLES_PERSON_DETECTION_EXPERIMENTAL_MAIN_FUNCTIONS_H_
#define TENSORFLOW_LITE_MICRO_EXAMPLES_PERSON_DETECTION_EXPERIMENTAL_MAIN_FUNCTIONS_H_
#include "tensorflow/lite/c/common.h"
// Initializes all data needed for the example. The name is important, and needs
// to be setup() for Arduino compatibility.
extern "C" void person_detect_init();
// Runs one iteration of data gathering and inference. This should be called
// repeatedly from the application code. The name needs to be loop() for Arduino
// compatibility.
extern "C" int person_detect(uint8_t * hardware_input);
#endif // TENSORFLOW_LITE_MICRO_EXAMPLES_PERSON_DETECTION_EXPERIMENTAL_MAIN_FUNCTIONS_H_

21
examples/tflitemicro_person_detection/tflu_person_detection/model_settings.cc Normal file
View File

@@ -0,0 +1,21 @@
/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
#include "tensorflow/lite/micro/examples/person_detection_experimental/model_settings.h"
const char* kCategoryLabels[kCategoryCount] = {
"notperson",
"person",
};

35
examples/tflitemicro_person_detection/tflu_person_detection/model_settings.h Normal file
View File

@@ -0,0 +1,35 @@
/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
#ifndef TENSORFLOW_LITE_MICRO_EXAMPLES_PERSON_DETECTION_EXPERIMENTAL_MODEL_SETTINGS_H_
#define TENSORFLOW_LITE_MICRO_EXAMPLES_PERSON_DETECTION_EXPERIMENTAL_MODEL_SETTINGS_H_
// Keeping these as constant expressions allow us to allocate fixed-sized arrays
// on the stack for our working memory.
// All of these values are derived from the values used during model training,
// if you change your model you'll need to update these constants.
constexpr int kNumCols = 96;
constexpr int kNumRows = 96;
constexpr int kNumChannels = 1;
constexpr int kMaxImageSize = kNumCols * kNumRows * kNumChannels;
constexpr int kCategoryCount = 2;
constexpr int kPersonIndex = 1;
constexpr int kNotAPersonIndex = 0;
extern const char* kCategoryLabels[kCategoryCount];
#endif // TENSORFLOW_LITE_MICRO_EXAMPLES_PERSON_DETECTION_EXPERIMENTAL_MODEL_SETTINGS_H_

23148
examples/tflitemicro_person_detection/tflu_person_detection/person_detect_model_data.cc Normal file
View File

File diff suppressed because it is too large Load Diff

27
examples/tflitemicro_person_detection/tflu_person_detection/person_detect_model_data.h Normal file
View File

@@ -0,0 +1,27 @@
/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
// This is a standard TensorFlow Lite model file that has been converted into a
// C data array, so it can be easily compiled into a binary for devices that
// don't have a file system. It was created using the command:
// xxd -i person_detect.tflite > person_detect_model_data.cc
#ifndef TENSORFLOW_LITE_MICRO_EXAMPLES_PERSON_DETECTION_EXPERIMENTAL_PERSON_DETECT_MODEL_DATA_H_
#define TENSORFLOW_LITE_MICRO_EXAMPLES_PERSON_DETECTION_EXPERIMENTAL_PERSON_DETECT_MODEL_DATA_H_
extern const unsigned char g_person_detect_model_data[];
extern const int g_person_detect_model_data_len;
#endif // TENSORFLOW_LITE_MICRO_EXAMPLES_PERSON_DETECTION_EXPERIMENTAL_PERSON_DETECT_MODEL_DATA_H_