calling one function from another

Question

divya 2013-5-22

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链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/76621-calling-one-function-from-another

采纳的回答： John Petersen

here is a program which calculates the image integral

function IntegralImages = GetIntergralImages(Picture)

% Make integral image from a Picture

% Convert the Picture to double

% double instead of im2double can also be used)

Picture=double(Picture);

% Make the integral image for fast region sum look up

IntegralImages.ii=cumsum(cumsum(Picture,1),2);

IntegralImages.ii=padarray(IntegralImages.ii,[1 1], 0, 'pre');

% Make integral image to calculate fast a local standard deviation of the % pixel data

IntegralImages.ii2=cumsum(cumsum(Picture.^2,1),2);

IntegralImages.ii2=padarray(IntegralImages.ii2,[1 1], 0, 'pre');

% Store other data

IntegralImages.width = size(Picture,2);

IntegralImages.height = size(Picture,1);

Mean4=OneScaleObjectDetection( IntegralImages,1, 1, 1,1)

i WANT TO CALL FUNCTION *OneScaleObjectDetection FROM THIS PROGRAM BUT ITS GIVES ME ERROR *

Undefined function 'GetSumRect' for input arguments of type 'struct'.

*_Error in OneScaleObjectDetection (line 6)

mean = GetSumRect(IntegralImages,x,y,w,h);

Error in GetIntergralImages (line 40)

Mean4=OneScaleObjectDetection( IntegralImages,1, 1, 1,1)_*

THE FUNCTION OneScaleObjectDetection IS AS FOLLOWS

function [x,y]=OneScaleObjectDetection( IntegralImages,x, y, w,h)

% Calculate the mean

InverseArea = 1 / (w*h);

mean = GetSumRect(IntegralImages.i1,x,y,w,h);

% Use the mean and squared integral image to calculate the grey-level

% Varianceiance, of every search window

Variance = GetSumRect(IntegralImages.i2,x,y,w,h)*InverseArea - (mean.^2);

% Convert the Varianceiation to Standard Deviation

Variance(Variance<1)=1; StandardDeviation =sqrt(Variance);

CAN ANYBODY HELP TO RESOLVE THE ERROR

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Answer 1

John Petersen 2013-5-22

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/76621-calling-one-function-from-another#answer_86330

You're calling a function GetSumRect(...) that is not defined.

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divya 2013-5-22

how to define this function...please explain in detail

Image Analyst 2013-5-23

We don't why you're calling these functions, or if you ever got them somehow. We have no idea if a friend wrote them for you, or if you wrote them, or if you downloaded then, or where they reside if you even do have them. And if they do exist, are they on your search path. Why don't you search your entire hard drive for those function names, both in filenames and inside m-files?

I don't even know if the misspelling of GetIntergralImages is intentional or not.

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