[英]“Matrix dimensions must agree ” error in Scene change detection example in Matlab documentation
I am using Matlab's scene change detection example given on the Mathwork website. 我正在使用Mathwork网站上给出的Matlab 场景更改检测示例 。 The code runs fine till the last leg where is is showing following error:
代码运行良好,直到最后一站显示以下错误:
Error using -
使用-时出错
Matrix dimensions must agree.矩阵尺寸必须一致。 Error in scenechange (line 65)
场景变更错误(第65行)
edge_diff = abs(mean_blks - mean_blks_prev);edge_diff = abs(mean_blks-mean_blks_prev);
Line of error is: 错误行是:
edge_diff = abs(mean_blks - mean_blks_prev);
I checked the dimensions. 我检查了尺寸。 They are:
15 1
and 70 1
. 它们是:
15 1
和70 1
。
Anyone tried the example and got this error? 任何人都尝试过该示例并得到此错误? How do I fix this error?
如何解决此错误?
Try this: 尝试这个:
len_mean_blks = length(mean_blks);
len_mean_blks_prev = length(mean_blks_prev);
if len_mean_blks < len_mean_blks_prev
padded_mean_blks = nan(len_mean_blks_prev, 1);
padded_mean_blks(1:len_mean_blks) = mean_blks;
edge_diff = abs(padded_mean_blks - mean_blks_prev);
elseif len_mean_blks > len_mean_blks_prev
padded_mean_blks_prev = nan(len_mean_blks, 1);
padded_mean_blks_prev(1:len_mean_blks_prev) = mean_blks_prev;
edge_diff = abs(mean_blks - padded_mean_blks_prev);
end
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