OpenCV iOS 开发笔记

GITHUB：https://github.com/endpang/opencvdemo

实现了寻找边缘和自定义上色。

• 添加opencv.framework后编译报错

Expected identifier

解决办法

把 NO 改为
NO_EXPOSURE_COMPENSATOR = 0

• opencv 依赖的库

libc++.tbd
AVFoundation.framework
CoreImage.framework
CoreGraphics.framework
QuartzCore.framework
Accelerate.framework

//摄像头
CoreVideo.framework
CoreMedia.framework
AssetsLibrary.framework

#import "ViewController.h"
#import <opencv2/opencv.hpp>
#import <opencv2/videoio/cap_ios.h>

//@interface ViewController ()


@interface ViewController ()<CvVideoCameraDelegate>{
    UIImageView *cameraView;
    CvVideoCamera *videoCamera;
}
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    cameraView = [[UIImageView alloc] initWithFrame:self.view.frame];
    [self.view addSubview:cameraView];
    
    videoCamera = [[CvVideoCamera alloc] initWithParentView:cameraView];
    videoCamera.defaultAVCaptureDevicePosition = AVCaptureDevicePositionFront;
    videoCamera.defaultAVCaptureSessionPreset = AVCaptureSessionPreset1920x1080;
    videoCamera.defaultAVCaptureVideoOrientation = AVCaptureVideoOrientationPortrait;
    videoCamera.defaultFPS = 60;
    videoCamera.grayscaleMode = NO;
    videoCamera.delegate = self;
}
- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    [videoCamera start];
}

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    [videoCamera stop];
}

#pragma mark -  CvVideoCameraDelegate
- (void)processImage:(cv::Mat&)image {
    //在这儿我们将要添加图形处理的代码
    cv::Mat image_copy;
    //首先将图片由RGBA转成GRAY
    cv::cvtColor(image, image_copy, cv::COLOR_BGR2GRAY);
    //反转图片
    cv::bitwise_not(image_copy, image_copy);
    //将处理后的图片赋值给image，用来显示
    cv::cvtColor(image_copy, image, cv::COLOR_GRAY2BGR);
}


- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

plist 里加入  Privacy – Camera Usage Description

服务器端代码

8000 端口的服务是 https://github.com/lllyasviel/style2paints

k.png 是一张纯白色 png

<?php
/**/
//print_R($_FILES);
$imgname = $_FILES['upload1']['name'];
$tmp = $_FILES['upload1']['tmp_name'];
$filepath = 'photo/';
if(move_uploaded_file($tmp,$filepath.$imgname)){
    //echo "上传成功";
    my_post($filepath.$imgname);
}else{
    echo "上传失败";
}
//*/
//my_post("photo/20180118172008.png");
function my_post($filename){
    $url = "http://172.18.100.205:8000/paint";

    $headers[] = 'Origin: http://172.18.100.205:8000';
    $headers[] = 'Accept-Encoding: gzip, deflate';
    $headers[] = 'Accept-Language: zh-CN,zh;q=0.9,en;q=0.8';
    $headers[] = 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36';
    $headers[] = 'Content-Type: application/x-www-form-urlencoded;';
    $headers[] = 'Accept: */*';
    $headers[] = 'Referer: http://172.18.100.205:8000/';
    $headers[] = 'Cookie: scale=2; style=photo; noise=2';
    $headers[] = 'Connection: keep-alive';
    //$post_data = array ("username" => "bob","key" => "12345");
    $ch = curl_init();
    $post_data = [];
    $post_data["sketchDenoise"] = "true";
    $post_data["resultDenoise"] = "true";
    $post_data["algrithom"] = "quality";
    $post_data["method"] = "colorize";
    $post_data["sketchID"] = "new";
    $post_data["referenceID"] = "no";
    //$b6 = "data%3Aimage%2Fpng%3Bbase64%2C";
    $b5 = "data:image/jpeg;base64,";
    $b6 = "data:image/png;base64,";
    //echo base64_encode($b6);
    $post_data["hint"] = $b6.base64_encode(file_get_contents("k.png"));
    $post_data["reference"] ="null" ;//$b6.base64_encode(file_get_contents("108_copy.png"));
    //$post_data["reference"] = null;
    $post_data["sketch"] = $b6.base64_encode(file_get_contents($filename));
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    // post数据
    curl_setopt($ch, CURLOPT_POST, 1);
    // post的变
    //echo $post_data["sketch"];
    //print_R(http_build_query($post_data));
    curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($post_data));

    $output = curl_exec($ch);
    $out_array = explode('*',$output);

    curl_close($ch);
    echo "http://172.18.100.205:8000/results/".$out_array[0].".jpg";
    //print_R($output);
}

No module named ‘skimage’   (python3)

apt install . python3-skimage