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2026-06-10

查找图片 - FindImageFromPath ​

函数简介 ​

在指定图片中查找指定图像，源图与模板均通过文件路径指定，返回第一个匹配结果。

接口名称 ​

FindImageFromPath

DLL调用 ​

long FindImageFromPath(long instance, string source, string templ, string deltaColor, double matchVal, int dir);

参数说明 ​

参数名类型说明
instance长整数型OLAPlug对象的指针，由 CreateCOLAPlugInterFace 接口生成。
source字符串源图片的路径
templ字符串模板图片的路径，可以是多个图片，如"test.bmp|test2.bmp|test3.bmp"
deltaColor字符串颜色差值，格式为"RRGGBB"，如"101010"
matchVal双精度浮点数相似度，如0.85，最大为1
dir整数型查找方向：0-从左到右从上到下；1-从左到右从下到上；2-从右到左从上到下；3-从右到左从下到上；4-从中心往外查找；5-从上到下从左到右；6-从上到下从右到左；7-从下到上从左到右；8-从下到上从右到左

示例 ​

SDK 调用 ​

cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
MatchData result = ola.FindImageFromPath("images/scene.png", "img/btn_ok.bmp", "101010", 0.9, 0);
if (result.MatchState) {
    int x = result.X;
    int y = result.Y;
}
csharp
using OLAPlug;

var ola = new OLAPlugServer();
var result = ola.FindImageFromPath("images/scene.png", "img/btn_ok.bmp", "101010", 0.9, 0);
if (result.MatchState)
{
    int x = result.X;
    int y = result.Y;
}
python
from OLAPlugServer import OLAPlugServer

ola = OLAPlugServer()
result = ola.FindImageFromPath("images/scene.png", "img/btn_ok.bmp", "101010", 0.9, 0)
if result.get("MatchState"):
    x = result["X"]
    y = result["Y"]
java
import com.olaplug.OLAPlugServer;
import com.olaplug.model.MatchResult;
import java.util.List;

OLAPlugServer ola = new OLAPlugServer();
MatchResult result = ola.FindImageFromPath("images/scene.png", "img/btn_ok.bmp", "101010", 0.9, 0);
if (result != null && result.MatchState) {
    int x = result.X;
    int y = result.Y;
}
cpp
var ola = com("OlaPlug.OlaSoft")
var result = ola.FindImageFromPath("images/scene.png", "img/btn_ok.bmp", "101010", 0.9, 0)
if(result.MatchState) {
    var x = result.X
}
vbscript
Set ola = CreateObject("OlaPlug.OlaSoft")
Set result = ola.FindImageFromPath("images/scene.png", "img/btn_ok.bmp", "101010", 0.9, 0)
If result.MatchState Then
text
.局部变量 ola, OLAPlug
ola.创建 ()
result ＝ ola.FindImageFromPath("images/scene.png", "img/btn_ok.bmp", "101010", 0.9, 0)
.如果真 (result.MatchState)
aardio
import OLAPlugServer;
var ola = OLAPlugServer();
var result = ola.FindImageFromPath("images/scene.png", "img/btn_ok.bmp", "101010", 0.9, 0);
if(result.MatchState){
    var x = result.X;
}
text
变量 ola <类型 = OLAPlugServer>
ola = 新建 OLAPlugServer
MatchData result = ola.FindImageFromPath("images/scene.png", "img/btn_ok.bmp", "101010", 0.9, 0)
如果真 (result.MatchState)
cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
MatchData result = ola.FindImageFromPath("images/scene.png", "img/btn_ok.bmp", "101010", 0.9, 0);
if (result.MatchState) {
    int32_t x = result.X;
    int32_t y = result.Y;
}

原生 DLL 调用 ​

cpp
long instance = CreateCOLAPlugInterFace();
long ptr = FindImageFromPath(instance, "images/scene.png", "img/btn_ok.bmp", "101010", 0.9, 0);
if (ptr != 0) {
    int matchState = 0, x = 0, y = 0, width = 0, height = 0, index = 0;
    double matchVal = 0, angle = 0;
    char json[4096] = {0};
    GetStringFromPtr(ptr, json, sizeof(json));
    ParseMatchImageJson(instance, json, &matchState, &x, &y, &width, &height, &matchVal, &angle, &index);
    FreeStringPtr(instance, ptr);
}
csharp
using System.Runtime.InteropServices;
using System.Text;

[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern int GetStringFromPtr(long ptr, StringBuilder lpString, int size);
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern int FreeStringPtr(long ptr);
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern int GetStringSize(long ptr);
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern long CreateCOLAPlugInterFace();
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern long FindImageFromPath(long ola, string source, string templ, string deltaColor, double matchVal, int dir);
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern int ParseMatchImageJson(string str, out int matchState, out int x, out int y, out int width, out int height, out double matchVal, out double angle, out int index);

long instance = CreateCOLAPlugInterFace();
long ptr = FindImageFromPath(instance, "images/scene.png", "img/btn_ok.bmp", "101010", 0.9, 0);
if (ptr != 0) {
    StringBuilder sb = new StringBuilder(GetStringSize(ptr) + 1);
    GetStringFromPtr(ptr, sb, sb.Capacity);
    FreeStringPtr(ptr);
    ParseMatchImageJson(sb.ToString(), out int matchState, out int x, out int y, out int w, out int h, out double mv, out double ang, out int idx);
}
python
from ctypes import CDLL, c_int, c_int64, create_string_buffer

ola = CDLL("OLAPlug_x64.dll")
ola.CreateCOLAPlugInterFace.restype = c_int64
instance = ola.CreateCOLAPlugInterFace()
ptr = ola.FindImageFromPath(instance, ...)
# 原生返回 JSON 字符串指针，可用 ParseMatchImageJson 解析

返回值 ​

字符串指针，返回JSON格式的匹配结果。DLL调用返回字符串指针地址，需要调用 FreeStringPtr 接口释放内存。

返回数据格式：

json
{
    "MatchVal": 0.85,
    "MatchState": true,
    "Index": 0,
    "X": 100,
    "Y": 200,
    "Width": 100,
    "Height": 100
}
字段名类型说明
MatchVal浮点数匹配相似度。
MatchState布尔是否匹配成功。
Index整数结果索引（从 0 开始）。
X整数X 坐标。
Y整数Y 坐标。
Width整数宽度。
Height整数高度。