% 读取视频帧序列 v = VideoReader('shoujilux7.mp4'); % 遍历视频帧序列 while hasFrame(v) % 读取当前帧并将其转换为灰度图像 frame = readFrame(v); gray_frame = rgb2gray(frame); % 进行gamma校正 gamma = 1.5; gamma_corrected = imadjust(gray_frame,[],[],gamma); % 进行高斯滤波 %filtered_frame = imgaussfilt(gamma_corrected, 2); sigma = 1; hsize = ceil(6*sigma); h = fspecial('gaussian', hsize, sigma); frame = imfilter(gamma_corrected, h); % 显示处理后的帧 imshow(frame); end对滤波后图像进行基于oust阈值分割

可以使用matlab自带的函数`im2bw`进行基于Otsu阈值分割，代码如下：

% 读取视频帧序列
v = VideoReader('shoujilux7.mp4');

% 遍历视频帧序列
while hasFrame(v)
    % 读取当前帧并将其转换为灰度图像
    frame = readFrame(v);
    gray_frame = rgb2gray(frame);

    % 进行gamma校正
    gamma = 1.5;
    gamma_corrected = imadjust(gray_frame,[],[],gamma);

    % 进行高斯滤波
    sigma = 1;
    hsize = ceil(6*sigma);
    h = fspecial('gaussian', hsize, sigma);
    filtered_frame = imfilter(gamma_corrected, h);

    % 进行基于Otsu阈值分割
    threshold = graythresh(filtered_frame);
    binary_frame = im2bw(filtered_frame, threshold);

    % 显示处理后的帧
    imshow(binary_frame);
end

其中`graythresh`函数用于计算Otsu阈值，`im2bw`函数将图像二值化，得到二值化后的图像`binary_frame`。