  The quantitative morphological classification of distant galaxies is
essential to the understanding of the evolution of galaxies over the history of
the Universe. This paper presents Hubble Space Telescope WFPC2 F606W and F814W
photometric structural parameters for 7450 galaxies in the ``Groth Strip.''
These parameters are based on a two-dimensional bulge+disk surface brightness
model and were obtained using an automated reduction and analysis pipeline
described in detail here. A first set of fits was performed separately in each
bandpass, and a second set of fits was performed simultaneously on both
bandpasses. The information produced by these two types of fits can be used to
explore different science goals. Systematic and random fitting errors in all
structural parameters as well as bulge and disk colors are carefully
characterized through extensive sets of simulations. The results of these
simulations are given in catalogs similar to the real science catalogs so that
both real and simulated measurements can be sampled according to the same
selection criteria to show biases and errors in the science data subset of
interest. The effects of asymmetric structures on the recovered bulge+disk
fitting parameters are also explored through simulations. The full
multidimensional photometric survey selection function of the Groth Strip is
also computed. This selection function, coupled to bias maps from simulations,
provides a complete and objective reproduction of the observational limits, and
these limits can be applied to theoretical predictions from galaxy evolution
models for direct comparisons with the data.
