cn.smartjavaai.common.utils

类 ImageUtils

java.lang.Object

cn.smartjavaai.common.utils.ImageUtils

public class ImageUtils
extends Object

图片处理工具类

构造器概要

构造器

构造器和说明
ImageUtils()

方法概要

限定符和类型	方法和说明
static BufferedImage	bgrToBufferedImage(byte[] data, int width, int height)
static void	drawImageRect(BufferedImage image, int x, int y, int width, int height) 画检测框
static void	drawImageRect(BufferedImage image, ai.djl.ndarray.NDArray box) 画检测框(有倾斜角)
static void	drawImageRect(ai.djl.modality.cv.Image image, int x, int y, int width, int height) 画检测框
static void	drawImageRectWithText(BufferedImage image, DetectionRectangle box, String text, Color color) 画检测框(有倾斜角)和文本
static void	drawImageRectWithText(BufferedImage image, ai.djl.ndarray.NDArray box, String text) 画检测框(有倾斜角)和文本
static void	drawImageText(BufferedImage image, String text, int x, int y) 显示文字
static void	drawText(Graphics2D g, String text, int x, int y, int stroke, int padding)
static byte[]	getMatrixBGR(BufferedImage image) 对图像解码返回BGR格式矩阵数据
static boolean	isAllImageSizeEqual(List<ai.djl.modality.cv.Image> images) 判断所有图片尺寸是否一致
static boolean	isBGR3Byte(BufferedImage image) 推断图像是否为BGR格式
static boolean	isImageValid(BufferedImage image) 检查图像是否有效
static List<File>	listImageFiles(String folderPath) 列出文件夹下的所有图片文件 List all image files under the folder
static void	putTextWithBackground(org.opencv.core.Mat image, String text, org.opencv.core.Point origin, org.opencv.core.Scalar textColor, org.opencv.core.Scalar backgroundColor, int padding) 在图像上绘制带白色背景、黑色文字的文本
static List<ai.djl.modality.cv.Image>	readImagesFromFolder(String folderPath) 读取指定目录下所有图片，返回 List（DJL 格式）
static int[]	rectXYXY(ai.djl.modality.cv.output.Rectangle rect, int width, int height) 计算左上角，右下角坐标 （x0,y0,x1,y1） Get absolute coordinations
static void	saveBoundingBoxImage(ai.djl.modality.cv.Image img, ai.djl.modality.cv.output.DetectedObjects detection, String name, String path) 保存图片,含检测框
static void	saveImage(BufferedImage img, String path) 保存BufferedImage图片
static void	saveImage(BufferedImage img, String name, String path) 保存BufferedImage图片
static void	saveImage(ai.djl.modality.cv.Image img, String name, String path) 保存DJL图片

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

ImageUtils

public ImageUtils()

方法详细资料

isBGR3Byte

public static boolean isBGR3Byte(BufferedImage image)

推断图像是否为BGR格式

返回:

getMatrixBGR

public static byte[] getMatrixBGR(BufferedImage image)

对图像解码返回BGR格式矩阵数据

参数:

image -

返回:

bgrToBufferedImage

public static BufferedImage bgrToBufferedImage(byte[] data,
                                               int width,
                                               int height)

isImageValid

public static boolean isImageValid(BufferedImage image)

检查图像是否有效

参数:

image -

返回:

drawImageRect

public static void drawImageRect(BufferedImage image,
                                 int x,
                                 int y,
                                 int width,
                                 int height)

画检测框

参数:

image -

x -

y -

width -

height -

drawImageRect

public static void drawImageRect(ai.djl.modality.cv.Image image,
                                 int x,
                                 int y,
                                 int width,
                                 int height)

画检测框

参数:

image -

x -

y -

width -

height -

saveImage

public static void saveImage(BufferedImage img,
                             String name,
                             String path)

保存BufferedImage图片

参数:

img -

name -

path -

saveImage

public static void saveImage(BufferedImage img,
                             String path)

保存BufferedImage图片

参数:

img -

path -

saveImage

public static void saveImage(ai.djl.modality.cv.Image img,
                             String name,
                             String path)

保存DJL图片

参数:

img -

name -

path -

saveBoundingBoxImage

public static void saveBoundingBoxImage(ai.djl.modality.cv.Image img,
                                        ai.djl.modality.cv.output.DetectedObjects detection,
                                        String name,
                                        String path)
                                 throws IOException

保存图片,含检测框

参数:

img -

detection -

name -

path -

抛出:

IOException

drawImageRect

public static void drawImageRect(BufferedImage image,
                                 ai.djl.ndarray.NDArray box)

画检测框(有倾斜角)

参数:

image -

box -

drawImageRectWithText

public static void drawImageRectWithText(BufferedImage image,
                                         ai.djl.ndarray.NDArray box,
                                         String text)

画检测框(有倾斜角)和文本

参数:

image -

box -

text -

drawImageText

public static void drawImageText(BufferedImage image,
                                 String text,
                                 int x,
                                 int y)

显示文字

参数:

image -

text -

x -

y -

drawImageRectWithText

public static void drawImageRectWithText(BufferedImage image,
                                         DetectionRectangle box,
                                         String text,
                                         Color color)

画检测框(有倾斜角)和文本

参数:

image -

box -

text -

drawText

public static void drawText(Graphics2D g,
                            String text,
                            int x,
                            int y,
                            int stroke,
                            int padding)

rectXYXY

public static int[] rectXYXY(ai.djl.modality.cv.output.Rectangle rect,
                             int width,
                             int height)

计算左上角，右下角坐标 （x0,y0,x1,y1） Get absolute coordinations

参数:

rect -

width -

height -

返回:

listImageFiles

public static List<File> listImageFiles(String folderPath)

列出文件夹下的所有图片文件 List all image files under the folder

参数:

folderPath -

返回:

readImagesFromFolder

public static List<ai.djl.modality.cv.Image> readImagesFromFolder(String folderPath)
                                                           throws IOException

读取指定目录下所有图片，返回 List（DJL 格式）

参数:

folderPath - 图片文件夹路径

返回:

List

抛出:

IOException

isAllImageSizeEqual

public static boolean isAllImageSizeEqual(List<ai.djl.modality.cv.Image> images)

判断所有图片尺寸是否一致

参数:

images - 图片列表

putTextWithBackground

public static void putTextWithBackground(org.opencv.core.Mat image,
                                         String text,
                                         org.opencv.core.Point origin,
                                         org.opencv.core.Scalar textColor,
                                         org.opencv.core.Scalar backgroundColor,
                                         int padding)

在图像上绘制带白色背景、黑色文字的文本