Image Capturing Apparatus Residual Recordable Number Calculation
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Solution Overview
Problem
Existing image capturing apparatuses inaccurately predict the residual recordable number of images in storage media due to fixed value division, leading to premature stopping of photography and inefficient memory usage.
Innovation Solution
An image capturing apparatus with an image compressing device using JPEG compression, a definition calculating device summing the absolute value of higher frequency components, and a residual recordable number calculating device, which calculates the residual recordable number using the definition of a standard image and memory medium capacity, providing a precise estimate of remaining images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If fixed value division is used to predict residual recordable number, then calculation simplicity is improved, but prediction accuracy deteriorates
Solution Approach 1:
The patent changes the parameter used for prediction from a fixed value to a variable based on image definition. Instead of dividing residual memory by a constant average file size, the system calculates the actual file size based on the current image's higher frequency components and compression ratio, dynamically adjusting the prediction parameter to match actual shooting conditions.
2Quantity of substance
If JPEG compression is used, then storage capacity is improved, but file size variability increases
Solution Approach 1:
The system implements feedback by calculating the actual file size based on the compressed image's higher frequency components and using this information to predict the residual recordable number. The compression ratio and definition calculation provide feedback about the actual space consumed, allowing accurate prediction despite variability in file sizes caused by JPEG compression.
3Productivity
If residual recordable number is accurately calculated, then photography continuity is improved, but memory usage efficiency may deteriorate
Solution Approach 1:
The patent uses partial action by calculating only the higher frequency components to determine definition, rather than processing the entire image data. This partial calculation provides sufficient information for accurate prediction without the computational cost of full image processing, maintaining photography continuity while avoiding excessive computational resource consumption.
Data Source
AI summary
An image capturing apparatus is provided having an image capturing device, an image compressing device, a recording device, a definition calculating device, and a residual recordable number calculating device. The image capturing device outputs a captured image. The image compressing device compresses the captured image using flexible compression. The recording device records the compressed captured image into a memory medium. The definition calculating device calculates a definition by summing the absolute value of higher frequency components in the compressed captured image before the higher frequency components are rounded off. The residual recordable number calculating device calculates a residual recordable number of images in the memory medium using the definition of a standard image, the file size of a standard image, and a residual recordable amount of the memory medium.