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please help me ..can not find out the error

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indrani dalui
indrani dalui 2020-4-21
关闭： MATLAB Answer Bot 2021-8-20
code:
gradient_sq_minus_value==(I_vertical-
I_horizontal).*(I_vertical+I_horizontal);
(gradient_for_bg_under) = (I_horizontal.*I_horizontal) +
(I_vertical.*I_vertical);
Error: File: fingerprintmatching.m Line: 72 Column: 40
Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched
delimiters.

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回答（1 个）

Geoff Hayes
Geoff Hayes 2020-4-21
indrani - the error in this code
gradient_sq_minus_value==(I_vertical-
I_horizontal).*(I_vertical+I_horizontal);
(gradient_for_bg_under) = (I_horizontal.*I_horizontal) +
(I_vertical.*I_vertical);
may be due to formatting or may be due to the parentheses around the variable gradient_for_bf_under while being assigned the value. Try using the following instead
gradient_sq_minus_value == (I_vertical-I_horizontal).*(I_vertical+I_horizontal);
gradient_for_bg_under = (I_horizontal.*I_horizontal) + (I_vertical.*I_vertical);
For gradient_sq_minus_value, do you really mean to use equality == ?

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