A system for evaluating a user-marked document having a response area and at least one image marker, the system includes a means for receiving a digital image of the user-marked document and a computer to identify user-mark positional information of at least one user-mark within the response area relative to the at least one image marker from the received digital image.

A system for evaluating a user-marked document having a response area and at least one image marker, the system includes a means for receiving a digital image of the user-marked document and a computer to identify user-mark positional information of at least one user-mark within the response area relative to the at least one image marker from the received digital image.

Embodiments include technologies for applying dynamic occlusions to barcodes, which include determining a dynamic occlusion to be applied to a barcode, generating an object for displaying a series of images of the barcode with the dynamic occlusion, where the barcode is to be scannable at least once based on the series of images to be displayed, and providing the object for access by the mobile device. In specific embodiments, the dynamic occlusion includes a modification to a first portion of the barcode to create a first image of a modified barcode. In further specific embodiments, the object, when displayed for a first time period, is to render the first image of the modified barcode for at least a first interval occurring within the first time period. The first portion of the barcode is unscannable during the first interval and is at least partially scannable during one or more other intervals.

A filter assembly for authenticating a filter cartridge includes a filter housing and an optical scanner mounted to the filter housing. A controller uses the optical scanner to take one or more digital images of the filter cartridge and obtain digital coded data identifying the filter cartridge. Specifically, the controller locates a functional locator on the filter cartridge, determines a location of an identifying region on the filter cartridge, reads the digital coded data by interrogating the identifying region with the optical scanner, and determines that the filter cartridge is authentic based at least in part on the digital coded data.

A method includes determining an error vector magnitude for analog signals received by multiple antennas in an array of antennas of a base station, assigning quantization bits to a plurality of analog-to-digital converters (ADCs) of the base station such that some ADCs have different numbers of quantization bits allocated from a fixed total number of available quantization bits of the base station, and applying the analog signals to the ADCs with quantization bits assigned to reduce the error vector magnitude of the analog signals.

Example methods, systems, and apparatuses for verifying a printed indicium are provided. An example method may include receiving a captured image of a print media comprising the printed indicium; extracting a quiet zone grade portion from the captured image, where the quiet zone grade portion includes a printed indicium area of the printed indicium and at least one quiet zone area adjacent to the printed indicium area; in response to receiving a user input providing an overwrite quiet zone requirement indication and determining that the at least one quiet zone area does not satisfy at least one quiet zone requirement, causing at least one of adjusting the at least one quiet zone requirement to at least one reduced quiet zone requirement or adding at least one additional quiet zone area to the at least one quiet zone area.

A computer-implemented system and process of producing a metric quality grade profile for use during inspection of DPM symbol marked on parts may include storing average metrics measured in a controlled environment for a golden sample. Measurements of the DPM symbol of the golden sample may be performed. Measurements of the metrics of the golden sample in an uncontrolled environment may be performed. Average metrics from the uncontrolled environment may be calculated. The averaged metrics from the controlled and uncontrolled environment may be compared. The user may be enabled to set an acceptable grade for the individual metrics. The acceptable grades for the individual metrics as a profile of the DPM symbol in memory.

A computer-implemented system and process of producing a metric quality grade profile for use during inspection of DPM symbol marked on parts may include storing average metrics measured in a controlled environment for a golden sample. Measurements of the DPM symbol of the golden sample may be performed. Measurements of the metrics of the golden sample in an uncontrolled environment may be performed. Average metrics from the uncontrolled environment may be calculated. The averaged metrics from the controlled and uncontrolled environment may be compared. The user may be enabled to set an acceptable grade for the individual metrics. The acceptable grades for the individual metrics as a profile of the DPM symbol in memory.

A method for checking a marking of a product. In an image acquisition step (3) at least one image (4) of the marking arranged on a surface of the product is acquired by a calibrated test camera, and in a layout checking step (1), using the at least one recorded image (4), the quality of the marking applied on the surface is checked with respect to static data such as position and machine-readability. Using the at least one image (4) recorded by the test camera, in addition to the checking of the quality of the marking in the layout checking step (1), in a code checking step (2), variable product information (12) contained in the marking is acquired and the acquired variable product information is compared with reference information from a reference information database (13). A correspondence characteristic is determined by means of the comparison.

A system for evaluating a user-marked document having a response area and at least one image marker, the system includes a means for receiving a digital image of the user-marked document and a computer to identify user-mark positional information of at least one user-mark within the response area relative to the at least one image marker from the received digital image.