Which matrix transformation filter is commonly used for edge detection in digital image processing?
Option A is correct. The Sobel operator (and Prewitt operator) uses 3x3 convolution kernels to compute the gradient magnitude of image intensity for spatial edge detection.
What is the uncompressed file size of a 1024 x 768 pixel image with 24-bit True Color depth?
Option A is correct. Total pixels = 1024 * 768 = 786,432 pixels. At 24 bits (3 bytes) per pixel, File Size = 786,432 * 3 = 2,359,296 bytes = 2.25 MB.
In digital imaging, what process converts a continuous analog visual image into a discrete spatial grid of pixels?
Option C is correct. Sampling digitizes the spatial domain by measuring image light intensity at discrete points (pixels). Quantization digitizes the amplitude (color/brightness level) of those samples.
Which digital image file format supports uncompressed, raw sensor data directly captured by digital camera hardware?
Option C is correct. RAW files contain minimally processed sensor data from a digital camera, preserving maximum dynamic range and detail for post-processing.
Which color space separates light intensity (luminance) from color channels (chrominance) to optimize video and image compression?
Option B is correct. YCbCr separates Y (luminance/brightness) from Cb (blue difference) and Cr (red difference), allowing chroma subsampling (e.g. 4:2:0) because the human eye is less sensitive to color detail than brightness.