Improve imageMath efficiency and fix typos

[mohseniaref]

Summary

• fix typos in imageMath.py error messages
• vectorize bounding-box merge logic
• compile expressions once for faster evaluation

[Copilot]

Pull Request Overview

This PR improves performance in imageMath.py by vectorizing merge logic and compiling expressions once, and corrects a typo in an error message.

• Fix typo in input-variable error message
• Vectorize mergeBbox loop for faster bounding-box checks
• Compile equations once before the main evaluation loop

Comments suppressed due to low confidence (5)

applications/imageMath.py:232

• Typo in error message: 'Invalud' should be 'Invalid'.

'Invalud variable name: %s'%varname)

applications/imageMath.py:275

• [nitpick] The tolerance 1.0e-5 is a magic number; consider defining it as a named constant with a descriptive name.

if np.any(diff > 1.0e-5):

applications/imageMath.py:428

• [nitpick] Reusing the name 'expr' for compiled code objects may be confusing; consider renaming to 'compiled_expr'.

for kk,expr in enumerate(compiled_eqs):

applications/imageMath.py:303

• Consider adding unit tests for compiled expressions to verify correctness and catch evaluation regressions.

compiled_eqs.append(compile(expr, '<string>', 'eval'))

applications/imageMath.py:276

• [nitpick] Use the project logger instead of print to keep logging consistent and configurable.

print("Bounding boxes don't match. Not adding bbox info.")