Abstract: A computer program analyzes an image including features that correspond to emissions detected from a biological probe array. The program aligns one or more grids, each having one or more grid cells, with all or portions of the image; selects one or more grid cells to be associated with features based on distributions of pixel intensity values within the grid cells; locates a shape, such as a circle, in each selected grid cell based on distributions of pixel intensity values within the grid cells; and associates one or more intensity values with a feature based on intensities of feature pixels, or feature pixels and portions of feature pixels, within the shape located in the selected grid cell associated with the feature. The features may correspond to spots of biological material such as nucleic acid, peptide, protein fragment, protein, antibody, ligand, receptor, or small molecule.

Abstract: An image alignment tool is described for adjusting the alignment of a grid with an image. An initial grid aligner determines an initial, approximately aligned, position of the grid. An intensity scorer determines, for each of a plurality of test grid elements of the plurality of grid elements, a set of intensity scores. Each member of the set is based, at least in part, on intensities of pixels of one or more image features within the test grid element in one of the initial or additional positions. A combined-rank-score generator combines, for each of the initial and additional grid positions, members of sets of rank scores corresponding to the grid position in order to generate a combined rank score for the grid position. A grid alignment adjuster adjusts the alignment of the grid based on a comparison among the combined rank scores.

Abstract: Embodiments of the invention provide methods, computer software products and systems for detecting pixel stutter of a scanner. In one embodiment, a numeric count of stuttered pixels in both the x (row) and y (column) directions and a graphic display of the stuttered pixels overlaid on the image data are provided by the invention. The y-direction stutter count provides the estimate of pixel stutter from pure statistical data variations.

Abstract: An image alignment tool is described for adjusting the alignment of a grid with an image. An initial grid aligner determines an initial, approximately aligned, position of the grid. An intensity scorer determines, for each of a plurality of test grid elements of the plurality of grid elements, a set of intensity scores. Each member of the set is based, at least in part, on intensities of pixels of one or more image features within the test grid element in one of the initial or additional positions. A combined-rank-score generator combines, for each of the initial and additional grid positions, members of sets of rank scores corresponding to the grid position in order to generate a combined rank score for the grid position. A grid alignment adjuster adjusts the alignment of the grid based on a comparison among the combined rank scores.

Abstract: A system is described that associates grids with a probe array image based upon a positional placement of one or more control features, aligns the grids with one or more pixels based upon a metric value determined by one or more characteristics of the one or more pixels, and generates cell intensity values. The system may also associate grids with a probe array image based upon a positional placement of one or more control features, determine a ratio of pixel intensity values associated with areas of the grid and adjust the positional association of the grid based upon the determined ratio. The system may also associate grids with a probe array image based upon a positional placement of one or more control features and generate cell intensity values based upon weighted pixel intensity values associated with areas of the grid.

Abstract: A computer program analyzes an image including features that correspond to emissions detected from a biological probe array. The program aligns one or more grids, each having one or more grid cells, with all or portions of the image; selects one or more grid cells to be associated with features based on distributions of pixel intensity values within the grid cells; locates a shape, such as a circle, in each selected grid cell based on distributions of pixel intensity values within the grid cells; and associates one or more intensity values with a feature based on intensities of feature pixels, or feature pixels and portions of feature pixels, within the shape located in the selected grid cell associated with the feature. The features may correspond to spots of biological material such as nucleic acid, peptide, protein fragment, protein, antibody, ligand, receptor, or small molecule.

Abstract: Systems, methods, and computer program products are described that provide an applications programming interface (API) for enabling a user-provided software application to access a data structure of a laboratory information management system application. The API includes one or more code libraries that enable transfer of user data from the user-provided software application directly or indirectly to the data structure. The user data includes data from a number of biological experiments. The transfer may be a batch transfer of data from more than one experiment. The biological experiments may be based on the use of synthesized arrays and/or spotted arrays. The code libraries may also enable exporting of data directly or indirectly from the data structure to the user-provided software application, which may include a data-mining tool, an image-processing tool, and/or a data-processing tool.

Abstract: Embodiments of the invention provide methods, computer software products and systems for detecting pixel stutter of a scanner. In one embodiment, a numeric count of stuttered pixels in both the x (row) and y (column) directions and a graphic display of the stuttered pixels overlaid on the image data are provided by the invention. The y-direction stutter count provides the estimate of pixel stutter from pure statistical data variations.

Abstract: Methods, systems and computer software products are provided for analyzing gene expression data using pixel intensities.

Abstract: An image alignment tool is described for adjusting the alignment of a grid with an image. An initial grid aligner determines an initial, approximately aligned, position of the grid. An intensity scorer determines, for each of a plurality of test grid elements of the plurality of grid elements, a set of intensity scores. Each member of the set is based, at least in part, on intensities of pixels of one or more image features within the test grid element in one of the initial or additional positions. A combined-rank-score generator combines, for each of the initial and additional grid positions, members of sets of rank scores corresponding to the grid position in order to generate a combined rank score for the grid position. A grid alignment adjuster adjusts the alignment of the grid based on a comparison among the combined rank scores.

Abstract: A system for identification of DNA bases in a nucleotide sequence includes a microprocessor and a set of executable instructions and is configured to accept a set of input data corresponding to a DNA sequence image from an autoradiograph. In part by interpolating a distribution of density peaks derived from the set of input data, the system is configured to generate a set of output data substantially identifying or presenting the bases in the DNA sequence in a linear fashion, corresponding to the linear order of nucleotides comprising the DNA sequence. The system thereby enables identification of substantially more bases than could be read by the human eye. Enhanced electrophoresis equipment and consumables may also be applied to generate a more predictable and linear set of input data and, in turn, to generate a set of output data identifying an even greater number of DNA bases in the sequence under analysis.