Image sensing apparatus using a non-interlace scanning type image sensing device

An image sensing apparatus comprising:

• image sensing means for generating image signals by sequentially reading all the pixels of said image sensing means in non-interlace scanning in one field period;
• camera signal processing means for generating first image signals and second image signals based on television signal standard;
• output signal selection means for selecting the first image signals or the second image signals outputted by said camera signal processing means;
• and
• signal recording means for recording a type signal showing a type of the image signals selected by said output signal selection means in a sub-cord recording area of a recording medium.

An image reproduction apparatus comprising:

• reading means for reading image data and a type signal recorded in a sub-cord recording area from a recording medium;
• an interpolation filter for interpolating image data between consecutive images sensed at different times in accordance with the type signal recorded in the sub-cord recording area of the recording medium;
• and
• interpolation filter control means for controlling whether or not to perform interpolation of image data using said interpolation filter,
• wherein, when the type signal recorded in the sub-cord recording area indicates a frame image sensing mode in which frame images are sensed in every other field period and either even or odd line field image signals of a frame image are recorded in a given field period and the other field image signals of the frame image are recorded in the next field period, and when the sensed image signals are to be outputted as a moving image, said interpolation filter control means controls said interpolation filter to perform interpolation of image data.

An image reproduction method comprising the steps of:

• reading image data and a type signal showing a type of the image signals recorded in a sub-cord recording area of a recording medium;
• determining whether moving image output is required or still image output is required;
• determining whether the type signal indicates either a field image sensing mode, in which either even line field image signals or odd line field image signals are recorded in one field period, or the frame image sensing mode in which frame images are sensed in every other field period and either even or odd line field image signals of a frame image are recorded in a given field period and the other field image signals of the frame image are recorded in the next field period;
• and
• interpolating images between consecutive frame images sensed at different times when the moving image output is required and the type signal indicates the frame image sensing mode.

An image sensing apparatus comprising:

• image sensing means for generating image signals by sequentially reading all the pixels of said image sensing means in non-interlace scanning in one field period;
• image sensing mode selection means for selecting an image sensing mode performed by said image sensing means out of a plurality of image sensing modes;
• and
• movement determination means for performing movement determination processes in accordance with the image sensing mode selected by said image sensing mode selection means.

Movement detection method for detecting movement in an image having a plurality of fields, comprising:

• field separation step of separating input image data into even line field data and odd line field data;
• difference calculation step of calculating field difference data between the even line field data and the odd line field data outputted at said field separation step;
• accumulation step of calculating a sum of the absolute values of the field difference data outputted at said difference calculation step;
• movement detection step of detecting movement between the even line field data and the odd line field data by comparing the sum of the absolute values of the field difference data calculated at said accumulation step to a predetermined threshold;
• and
• movement information generation step of generating movement information signal on the basis of the detection result detected at said movement detection step and the image sensing mode selected at said image sensing mode selection step.

Movement detection method for detecting movement in an image having a plurality of fields, comprising:

• field separation step of separating input image data into even line field data and odd line field data;
• difference calculation step of calculating field difference data between the even line field data and the odd line field data outputted at said field separation step;
• accumulation step of calculating a sum of the absolute values of the field difference data outputted at said difference calculation step;
• threshold switch step of outputting one of a plurality of thresholds on the basis of the image sensing mode selected at said image sensing mode selection step;
• and
• movement information generation step of detecting movement in the input image data by comparing the sum of the absolute values of the field difference data calculated at said accumulation step to the threshold inputted at said threshold switch step and generating movement information signal on the basis of the detection result.