I. INTRODUCTION

II. POWER SPECTRUM AND BISPECTRUM WITH PRIMORDIAL NON-GAUSSIANITY

A. Local-type primordial non-Gaussianity

B. Integrated Perturbation Theory (iPT)

III. OBSERVABLES OF IMAGING SURVEY AND ERROR COVARIANCE

A. Imaging surveys

B. Angular power spectra and angular bispectra

C. Error covariance

IV. SIGNAL-TO-NOISE RATIO

V. FORECAST CONSTRAINTS ON PRIMORDIAL NON-GAUSSIANITY

VI. IMPACT OF TOMOGRAPHIC MEASUREMENT

VII. SUMMARY