Read and display an image.

I = imread(“ Peppers.png”); imshow(I)

Select a rectangular region of size 50-by-100 pixels from a random location in the image.

矩形= randomWindow2d(size(I),[50 100]);

Erase the pixels from within the rectangular region.

J = imerase(I,rect);

显示擦除的图像。删除的像素具有值0.

imshow(J)

Read and display an image.

I = imread("car1.jpg"); imshow(I)

Specify the size and position of the erase rectangle as a 4-element vector of the form [xminyminwidthheight].

矩形= [1040 1525 250 200];

Erase the pixels from within the rectangular region, and fill the erased pixels with the color green.

J = imerase(I,rect,"FillValues",[0 255 0]);

显示擦除的图像。

imshow(J)

Read and display a color image.

I = imread('flamingos.jpg'); imshow(I)

Select a random square window from the image. The area of the window is between 2% and 13% of the area of the entire image.

win = randomWindow2d(size(I),"Scale",[0.02 0.13],"DimensionRatio",[1 1;1 1]);

Determine the height and width of the erase region.

hwin = diff（win.ylimits）+1;wwin = diff（win.xlimits）+1;

Erase the pixels within the erase region. Fill each pixel with a random color.

J = imerase(I,win,"FillValues",randi([1 255],[hwin wwin 3]));

显示擦除的图像。

imshow(J)