Impresee Labs


Cutting-edge AI research with straight application to industry.

Our Research Area

Our research is mainly related to Artificial Intelligence with emphasis in Computer vision and Natural Languale Processing. Our team works in problems related with searching by pictures and sketches, video based retrieval, and NLP for e-commerce.

Sketch Based Image Retrieval

Sketch based image retrieval (SBIR) is a growing field in computer vision that consists in retrieving a collection of photos resembling a sketch query. Aiming to make the querying process as easy as possible, the input query is formulated as a simple hand-drawing, composed uniquely of strokes. In this way, people just need to draw what they are looking for, or what they are thinking of.

Searching by Images

Searching by images allows people to find products just by simply sending a picture resembling what they are looking for. In this way, the searching engine can leverage the whole semantic included in the image itself. Furthermore, to increase the retrieval performance, images require to be split into theirs semantic parts.

NLP for e-commerce

NLP deals with processing and understanding natural language data. We conduct different works aiming to improve the effectiveness of search engines through NLP based approaches.


Research Leads

José M. Saavedra

Director of Impresee Labs. PhD in Computer Science, University of Chile.

Research Areas: Computer Vision, Deep Learning, Pattern Recognition

José M. Saavedra

José M. Saavedra

Director of Impresee Labs. PhD in Computer Science, University of Chile


Research Areas: Computer Vision, Deep Learning, Pattern Recognition

Juan Barrios

CEO of Impresee. PhD in Computer Science, University of Chile.

Research Areas: Multimedia Information Retrieval, Computer Vision, Data Mining, NLP


Juan Barrios

Juan Barrios

Director of Impresee Labs. PhD in Computer Science, University of Chile


Research Areas: Computer Vision, Deep Learning, Pattern Recognition

We are involved in the development of innovative models in areas like computer vision, data analytics and NLP, looking to bring a great impact to wordwide industries. We keep a talented team specilized in accelerating technology transfer from the research to the business world.

José M Saavedra



Pablo Torres

Sketch based Retrieval

Catalina Contreras

Visual Recommendation

Jean Cherubini

One-shot detection

Javier Morales

Unsupervised Learning for SBIR

Lukas Pavez

Non-Local Features

Andres Baloian

Attribute based Retrieval

Cristobal Loyola

One-Shot Detection





Andre G. Hochuli, Alceu S. Britto Jr., David A. Saji, Jose M. Saavedra, Robert Sabourin, Luiz S. Oliveira,

A Comprehensive Comparison of End-to-End Approaches for Handwritten Digit String Recognition.

Expert Systems with Applications, 2020. 

Úbeda, I., Saavedra, J.M., Nicolas, S., Petitjean, C., Heutte, L.

Improving Pattern Spotting in Historical Documents Using Feature Pyramid Networks

Pattern Recognition Letters,  2020.


Fabian Souto Herrera, Jose M. Saavedra.

DLDENet: Deep Local Directional Embeddings with Increased Foreground Focal Loss for object detection

38th International Conference of the Chilean Computer Science Society (SCCC), 2019.

Úbeda, I., Saavedra, J.M.,Nicolas, S., Petitjean, C., Heutte, L.

Pattern spotting in historical documents using convolutional models

ACM International Conference Proceeding Series,  2019



Domingo Mery , Erick Svec , Marco Arias , Vladimir Riffo , Jose M. Saavedra , Sandipan Banerjee.

Modern Computer Vision Techniques for X-Ray Testing in Baggage Inspection

IEEE Transactions on Systems Man Cybernetics-Systems, 2017  


Saavedra, Jose M.

RST-SHELO: Sketch-based Image Retrieval using Sketch Tokens and Square Root Normalization

Multimedia Tools and Applications, 2017


Jose M. Saavedra, Camila Alvarez.

DeepSBIR: Sketch Based Image Retrieval using Deep Features

1st Workshop on Deep Learning for Pattern Recognition DLPR, ICPR, Cancún, Mexico, 2016.


Barrios, J.M., Saavedra, J.M.

Score propagation based on Similarity Shot Graph for improving Visual Object Retrieval

SLAM 2015 – Proceedings of the 2015 Workshop on Speech, Language and Audio in Multimedia, co-located with ACM MM 2015 pp. 19-22. 2015.


Jose M. Saavedra and Juan Manuel Barrios.

Sketch based Image Retrieval using Learned KeyShapes

(LKS). In Proceedings of the British Machine Vision Conference (BMVC), 2015.

Felipe Ramírez, Héctor Contreras, Alejandro Figueroa,Mauricio Palma.

Gestión de Contactabilidad en Email para Mejorar la Experiencia del Usuario en la Industria Financiera

11o Seminario Internacional “Big Data” de la Fundación Copec, Universidad Católica, 2015.

See more


Saavedra, Jose M., Bustos, Benjamin.

Sketch-based Image Retrieval using Keyshapes

. Multimedia Tools and Applications, 2014. 

DOI: 10.1007/s11042-013-1689-0

Chang, Violeta, Saavedra, Jose M., Castaneda, Victor, Sarabia, Luis, Hitschfeld, Nancy, Haertel, Steffen.

Gold-standard and improved framework for sperm head segmentation

Computer Methods and Programs In Biomedicine, 2014.

DOI: 10.1016/j.cmpb.2014.06.018

Li, Bo, Lu, Yijuan, Godil, Afzal, Schreck, Tobias, Bustos, Benjamin, Ferreira, Alfredo, Furuya, Takahiko, Fonseca, Manuel J., Johan, Henry, Matsuda, Takahiro, Ohbuchi, Ryutarou, Pascoal, Pedro B., Saavedra, Jose M.

A Comparison of Methods for Sketch-Based 3d Shape Retrieval

. Computer Vision and Image Understanding, 2014.

DOI: 10.1016/j.cviu.2013.11.008

Saavedra, Jose M. Handwritten Digit Recognition Based on Pooling SVM-Classifiers Using Orientation and Concavity Based Features. Lecture Notes in Computer Science, 2014.

DOI https://doi.org/10.1007/978-3-319-12568-8_80

Saavedra, Jose M.

Sketch Based Image Retrieval Using a Soft Computation of The Histogram of Edge Local Orientations (S-HELO)

. IEEE International Conference on Image Processing (ICIP),  2014.

DOI: 10.1109/ICIP.2014.7025606

Diem, Markus, Fiel, Stefan, Kleber, Florian, Sablatnig, Robert, Saavedra, Jose M., Contreras, David, Barrios, Juan Manuel, Oliveira, Luiz S. ICFHR 2014 Competition on Handwritten Digit String Recognition in Challenging Datasets (HDSRC 2014), 14TH International Conference on Frontiers in Handwriting Recognition (ICFHR), 2014.

DOI: 10.1109/ICFHR.2014.136

2013Juan Manuel Barrios, José M. Saavedra, Felipe Ramirez, David Contreras.

ORAND Team: Instance Search and Multimedia Event Detection Using k-NN Searches

TRECVID, 2013.

Saavedra, J.M., Bustos, B., Chang, V.

An accurate hand segmentation approach using a structure based shape localization technique

. VISAPP 2013 – Proceedings of the International Conference on Computer Vision Theory and Applications, 2013.


Li, B., Lu, Y., Godil, A.,Schreck, T., Aono, M., Johan, H., Saavedra, J.M., Tashiro, S.

Shrec’13 track: Large scale Sketch-based 3D Shape Retrieval

. 6th Eurographics Workshop on 3D Object Retrieval, 3DOR 2013,  2013.

DOI: 10.2312/3DOR/3DOR13/089-096

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