From Pixels to Words
Pranay Dugar, Rajesh Shreedhar Bhat, Asit Tarsode, Uddipto Dutta, Kunal Banerjee, Anirban Chatterjee, Vijay Srinivas Agneeswaran · 2021
Extracting texts of various shapes, sizes, and orientations from images containing multiple objects is an important problem in many contexts, especially, in connection to E-commerce. In the context of the scale at which Walmart operates, the text from an image can be a richer and more accurate source of data than human inputs and can be used in several applications such as Attribute Extraction, Offensive Text Classification, Product Matching among others. The motivation of this particular work has come from different business requirements such as flagging products whose images contain words that are non-compliant with organizational policies and building an efficient automated system to identify similar products by comparing the information contained in their respective product images and many others. Existing methods fail to address domain specific challenges like high entropy, different orientations, and small texts in product images adequately. In this work, we provide a solution that not only addresses these challenges but is also proven to work at a million image scale for various retail business units within Walmart. Extensive experimentation revealed that our proposed solution has been able to save around 30% computational cost in both the training and the inference stages.